hi sifu sifu's, can you guys roughly guide me to what i need to do?

i think i have the rough idea already but i just need to be sure about it.

currently driving the new saga, with stock everything. and i also have in possession of a 4ch amp, 1 comp set, and 1 xover.

so now, i want to get rid of all my stock speakers and maintain my stock hu till i have enough for a decent upgrade, and planning for prolly 1 10" subs for later.

should i hook the 4ch amps and get 2 chs for the comp set and leave the other 2 empty first, then i just leave the xover out of the picture till i get a sub? the 4 ch amp (alpine MRP - F240) should be sufficient enough to power 1 comp set and 1 sub right?

alrighty then, thanks for the input.