i dont really understand your question. but you shouldnt b running a woofer straight off the deck. and the rears should have hookups in the back of the kenwood?
i assume you mean it only has one rca out put......if this is the case and you want to use 2 amps you can use "y" splitters to split the rcas for 2 amps.
Pretty much any Kenwood remote control will work with any remote controllable HU.
I still have an old credit-card style remote (cannot recall the model # currently) that I bought as an option with a KAC-608 cassette deck some years ago.
I still use that remote to this day with my XXV-01D since it has direct-access source buttons rather than having to scroll through the available options via the source button on the newer remotes.