Wow, when it rains it pours! Thanks for all the responses!!
In response to the 4 wheel thing... I was trying to figure out a way to make the cart turn easily without making a complicated interface. I also don't have the most level ground in my back yard, so I was hoping that three wheels would level better than 4. Harbor Freight has a good deal on 10" fixed pneumatic tires, but they don't have an equivalent swivel mounted one. I figure that's going to be the cheapest place for me as long as they're running a sale. Maybe I'll just fix some outriggers or some skids that can drop down on the "tippy" side.
The burner will go under the angle iron stand on top. I ordered one of those SQ-14s people seem to love on here. I haven't quite worked out the logistics of the flow yet. I was thinking I'd fill the keg with 10 gal and drain off 5 into the Mash Tun once I reach my dough-in temp, then continue to heat the remaining 5 to mash out temp. I haven't tried it yet, but I'm hoping this will work because I definitely don't feel like lifting 10 gallons of water 4 feet in the air
