A little late to the thread but never too late to the party my Momma used to say.
Here's a few pics of my setup and it only cost me $10 for the tote and I had the Reflectix already. It holds two 7.9 gallon brew-buckets.
I used to keep several gallons of water in there as well but it promotes mildewing on the sides of the fermenters. The water helped keep the temps steady along with the ice-packs but now I've since gone without the water for many batches and the mildew problem cleared up immediately.
Depending on ambient temps and desired wort temps I'll use 2-4 blue ice packs or 20oz soda bottles. This has worked extremely well for my brewing ales.
The "out" on the thermometer corresponds to the interior of the chamber.
I just lost everything i typed. That sucks...
Anyway, I pretty much use the same set up but I have water with the ice packs and a tshirt around the bucket. Where do you get the reflectix?
The brewing pretty much went off without a hitch (I should invest in a bigger pot though), and I started getting activity in my airlock, so I'm happy. I'm changing ice packs at least twice a day, and the set up has been really good at maintaing a temperature. I'm going to invest in a digital thermometer because those stick on ones suck. I am confident in this set up, and we'll see how well it handles over the next few days which of course are supposed to be the hottest yet this year.
Thank you everyone for your advice, and should this go well I will attempt the Wit.