Attic Stealth Grow

Alright, Iv have been thinking about growing for a while, and since the winter season is upon us, i think im ready to start my first indoor grow. Here is what my plan is... My box with be a 2 Ft. wide 6 Ft. tall cardboard box with a wooden structer so it wont collaspe and I will be able to hang my lights and fan from it, the inside will be pained white.. I think im going to grow 2 female plants from start to finish in this box. I will have 2 50 wt floros mounted on the top of the box and an exhaust fan on the top and a couple of holes at the bottom of the box. Now i have a few questions. Timers, this box is going to be in an attic which is only accessible from my Drommates room. So i will only be able to get up there once a day. So i will need a timer for the lights. what kind would be best to use for this. The attic is not heated, so i am hoping my floros with heat it preety well. I need everything in the box, from veg to flowering. So im hoping i will be ok going with the floros. I also would like to know if i threw a space heater aroud the box do you think that would help witht the coldness. i also have a decision to make on what kind of strain will be growing. I want something that will be easy and will get me a good yeild with small oder. Tell me what you think. Thanks guys.

instead of 6 feet tall make it 3 feet tall and like 6 feet wide and grow lots of low ryder. i heard you can achieve 2.5 ounces off one plant. and they grow in 6-8 weeks. from seed to harvest. and keep the males you mwell need the seeds if you plan on keep growing, because you cant clone a lowryder.

^^^ Lowryder yields about 1/4-oz per plant. No way could it hold 2.5oz of bud on one lowryder plant. Personally I think it's a crappy plant, it's not potent either.

The box sounds alright but I would make it a bit bigger, it's the attic so I assume you're not pressed for space. And I'd add some more lights, perhaps about 200W worth total for 2 plants.