I know i am all over the board on speakers but i just sent a check for two pairs of Rev10s.
With this being said i am currently looking at two amps and do not know what way to go
I am trying to stay with a name brand amp and not over $400.00.

the amps are
Rockford Fosgate P1000x2
Rockford Fosgate P1000x4d

what is better a Two channel with two speakers paralleled or a 4 channel with a Channel per speaker?

What size speaker wire would be best for each application.

currently i have two sets of speaker wires and i think they are 16 gage They might be 12 gage going to check tonight.