That looks cool, but we were going to veg with artificial light, so it might be easier with a full enclosure, but let's wait and see.
But yes, you are correct, no mention of size or cost restrictions has been made that I noticed either.
Well, hopefully we can keep our Jillybean thriving...Meanwhile, here's MY Jillybean. Not the set up we've built this thread on at all. I have a 400W bulb and about two more feet of usable space. I have two like this...about 6 weeks old, topped for four main colas, and LSTed to a bamboo grid I attached to my hydro lid. Flipped them last week and, yes, they are GIRLS! This is only my second grow, but it will be my first harvest as the last one ended abruptly due to maleness.