McIntosh MC255 amplifier with what processor?

[1KW]

I picked up a McIntosh MC255 for a 5.1 theater , I really don’t need more channels. Trying to figure out if I’m better off with a used processor or new since I am only interested in 5.1 ? Plan to get either 2 JL audio E122 subs or one F112. From what I can see the power difference between the two subs are negligible and the E112 lacks balanced input/output which probably isn’t necessary for a 10 foot cable.