i would recommend any a Class D sub amp…they dont suck all the power like a normal amp does…i was always a fan of MTX but thats me…i have a small MTX Class D amp running one 10 and it can prolly run another one with no issues…as far as the componnent speakers a nice alpine 4 channel amp or again i 
MTX stuff…i am sure Funky can help u out a little more…but like i said i never has issues with mtx…Rainbow Tint also has good deals on crossfire stuff if ur on a tight budget