First CFL Grow/Semi-stealth dresser(Pics included)

Well after germinating two bag seeds (Was told it was Northern Lights) just for the hell of it I ended up looking up a bunch of stuff about indoor growing and after watching a bunch of YT vids I became very interested in wanting to actually give it a go myself. That's when I came across this lovely community you guys have here, been hooked since and I've been trying to read anything and everything I can on here. After thinking a bunch about what I wanted to do it in I remembered I had an old dresser with this cabinet that would work perfect. So anywho after a few modifications with a dremel tool and a couple trips to wally world I was pretty satisfied with my work so far. Gonna hopefully be turning this into a journal but right now I'm looking for any and all advice I can get, hoping you guys can help me out as I go. So lets get to the pics, more to come with many questions to come as well.

Ok so as for some specs on my current setup.
The dimensions of the inside of the box are 17.5" x 15.5" x 29.5"
4x26w=100w 6500k CFL's
2x80mm computer case fan's. 1 intake 1 exhaust
1 small desk fan at bottom of case for circulation
Temps 75-80 variant sorta from bottom to top/65-70 during night when lights off
Running lights at 18/6 currently

Hoping to get some advice on my intake/exhaust setup and if I should get some more lights. Open to any and all sorts of criticism.

 

The soil that I'm using is MG Potting Mix (pics at bottom). I know it's not the best but they seem to be liking it so far, was looking at the Fox Farm line of potting soils but not sure what I'd need. As for nuts I was looking at the Liquid Nutrient Trio Soil Formula-Big Bloom®, Grow Big® and Tiger Bloom® from Fox Farm as well. I found a store about 45mins away that sells the potting soils but they only had Grow Big in stock, mentioned she could possibly order me the others. I also have some MG Organic Fertilizer (pics also) that we use for the other potted plants around the house, not sure if I should use it or not. I threw in the other 6500k bulb that I had and have it hanging down at plant level to get the side on it like you guys said, planning on rigging up some side lighting here soon too. As for light leaks do you just mean for stealth purposes? Right now I have black electrical tape around the lip of the opening to prevent light coming out the front. But the two holes in the back have light coming out of them, open for ideas of how to conceal this. Also I think I have a slight temp issue but I'm not sure, I'm usually running like 78-81 when it's all closed up. Is that too hot? Thinking maybe another exhaust fan on the top right side. Before I ramble some more here's some more pics.

 

I moved my temp/humidity thing up on the side a little above the top of the plants and notice I'm getting like 80-83 and it kinda looks like the leafs are curling a bit, but I'm not sure so I took a couple pics. And as for the light leaking out I'm talking about you can kinda see it in my first post pics, the one of the back side. It's the two holes for the fans that some light is coming out of on the back side.

 

Any thoughts on the temps anyone? Is the curling I see from heat? Also what are good humidity levels? I'm getting anywhere from 30-45% humidity. Some bud porn pics for you guys, some Bubble Berry I picked up the other day.

 

Went out and picked up some FF Ocean Forest and tried to get all three of the liquid plant food's but they only had Grow Big at the time, said she was getting more in next week.

Now when I replant these should I go for something bigger then the two 8" pots I'm using right now? And how should I go about using the Grow Big? Should I follow the 'seedling' instructions on the back, 1/2 tsp per gallon of water once per week. Or should I not be using nute's yet?

I noticed today that the leaves aren't really curling anymore, think it may have been heat related but also I didn't know if over watering can cause leafs to curl. Someone mentioned pH so I also grabbed a cheap pH/moisture/light meter today. Checked the MG soil I was using with the same water I was using to water (I've been using room temp water from my Brita pitcher). It looked to be in the 6.2-6.5 area, but I'm not positive as the meter doesn't show decimals.

 

I'm seeing a few different 'hannah' pH meters on ebay, I'm sure they're all good but I don't know what to get. Seeing prices from like 30-150.

Took a few new pics today, can see all the new leafs coming out from all the nodes. I'm sure it's too soon to tell sex but if anyone can see anything let me know. A couple other pics as well, got a couple baby cacti while I was at this huge nursery today. Also picked up a new 120mm exhaust fan, hoping it helps a bit with temps.

 

Took the suggestions about having the lights horizontally and made myself a new light rig, with a few ideas taken from you guys here. Still only had room for 4 bulbs but I'm planning on getting a couple to hang down on the sides when they get bigger.

Also I haven't transplanted them into the Fox Farms soil yet, not sure what size of final pot I should be using. Also how should I go about using the Grow Big at this state?

Got a funny pic here too, while I was moving the plants around to setup the new lights I had the plants sitting next to my bearded dragons cage. She seemed very intent on wanting to eat my plants lol.

 

Still kinda wondering what size pots would be good to transplant them into, something that would be good for the space I have.

And yeah I'm using 4 26w 6500k CFL's at the moment, gonna put in another one or two here tomorrow to hang down on the sides.