Pre OP questions
Morgan, as much as I hate to say it you may have to wait until fall break for surgery. If you can't get the weight off in time for a July surgery you would have great difficulty getting enough fluids in at practice. At first drinking the 64 oz is hard. I can't imagine how hard it would be to add fluids to that to compensate for the heat.
I am a teacher also. I think if you do a surgery on the Wednesday before fall break you could go back to work on Monday. You are gonna be tired but it is doable.
I really don't want to rain on your parade but you may have to be realistic about the effects of the heat.
Hang in there and give the diet your best shot. Hopefully your body will cooperate with you. Your timeline gives you no room to play with staying good. I don't think the docs will give you any wiggle room in the weight number either.
Denise