Homemade Volcano, need advice.

Hello everyone. I wanted to ask you guys your opinion on something I'm working on.

So, I've been using a lightbulb vaporizer for about a month now and I actually like it pretty well, I tried my best to make it as good as possible. It saves me herb, I get pretty high, and my roommates don't care about me using it because of the lack of smell. It's pretty nice.

Now, the only problem with it is that it takes me around 20 minutes to fully vape all of it, so I get a buzz for a long time but I don't get as high as i'd like. So, I had an idea of modifying it to reduce the time I have to spend.

So, here's where I wanna know what you guys think: If I were to add a large plastic bag that I would seal to the mouth piece(a cap with an e-cig tank glued to it which I can remove and put back on) and made sure that it was entirely airtight, would I basically have a homemade volcano vape? I don't really see why it wouldn't work... I would heat it up like usual by lighting the bottom of the lightbulb, but instead of taking a hit every couple of minutes, all of the vapor would go to the large bag i'm using and I could simply remove the mouth piece & bag from the bulb and inhale a lot of it really fast.

What do you guys think? Does this sound like a decent idea? I don't want to spend money on a real vape, and smoking doesn't get me as high. Any advice or opinion you have would be very helpful.