Yes it's a good idea, I use a Bayou Classic sq14 and it brings a 7 gal wort to boil no problem. Plus brew outside now so my wife is happy, full boil brewing so I'm happy, really a win win. If your pot is a 10 gallon or bigger would be a concern, but I'd definitely go for it.
I am about to make the switch to BIAB and convert a keg I have into a kettle. So now I am looking for a burner and was wondering if anyone has had an issue with weight using the burner from the Turkey fryer? Keg = ? Water = 8 lb a gal plus grains can add up quick.