It's 50" wide... is that wide enough for all three of your pots?
The type/size of burners have nothing to do with a RIMS system... you can add RIMS to almost anything.
Bobby has good prices on pumps and a nice RIMS tube with tri-claps at Brewhardware.com. They even havr a kit with pump, hoses, cam-locks, etc. I highly recommend them.
Keg #1: Bourbon/Oak Vanilla Porter
Keg #2: Cascadian Stout
Keg #3: BMC West
Bottled: Mjolnir Mead, Lazy Daze Hefe, The Bollocks ESB, Dark Matter stout.