I grow in soil 50/50 FFOF/Happy Frog under a 400W CMH (Ceramic Metal Halide). 12/12 from seed obviously.
Damn, 2-3 Oz dried? I must be missing something.
I've been doing this for a while but average 3/4 - 1 Oz bone dry off most of my plants. Though I'm growing a lot of Subcool's gear which seems focused on smell/taste/high rather than weight.
Regarding pot sizes, it hasn't made too much of a difference so far that I've seen, aside from having to feed more often in a smaller pot. I use 1 gallon pots as my staple, but I also have 2 and 3 gallon pots as well. I recently grew some Silver Kush, one seed in a 1gal, another in a 3gal. Somehow they both look identical, which is rare from seed. But I though the 3gal would be a little bit bigger. Nope. Just never had to feed it, whereas the 1gal needed feeding much earlier.
Either way, weight doesn't concern me so much. It's all personal and I harvest 2 plants every month. It's way more than I can smoke by myself. I give lots away to friends under the guise that I'm rich.
If you aren't familiar with CMH bulbs, get to it! They kick some serious ass for 12/12 growing!
http://www.growlightexpress.com/pages/ceramic-metal-halide-pv-c0-2.html