I like it, however, I have some concerns. First, as was mentioned, charring. You do have some shielding, but you may find that it's not enough. Keep an eye on it, and keep either a fire extinguisher or charged water hose near by. I have a wood stand, and had to add shielding to prevent charring. Second, it appears that your burners are only supported by four bolts. What size batches are you planning on? Maybe they'll be ok for a five gallon, but I'd be very afraid to be near that with 10 gallons on it. The bolts could soften when they get hot, and having 100+ pounds pushing on them could cause them to fail. That won't be pretty if you have 10+ gallons of boiling wort splashing all over you.