I acquired one keg just need two more they are hard to come by here in Baltimore . Ill post up some pics of the build as I go along .
Don't worry about a MLT keg right now. You can get a decent deal on the 10gal Round coolers. Build a good mashtun and you can figure out a cheap HLT option. It's super easy to add a burner later when you get the MLT keg.
After collecting my setup (2 Cooler+1 Keggle)....a heatable HLT is WAY more important than a heatable MLT. Take your time to find a kegs or save for brewpots.
I'm going single level, and probably sell my Cooler HLT off to fund some of the build. I have a 3rd keg for mashing, but I'm not intent on using it yet. I've got my strut bought and need to put in an order for the fittings.