Good Day Tsikoteers!

I have an Alpine CDE-W265BT, gusto ko I-upgrade speakers and add subwoofer, ok ba entry level na Morel for fronts at least 2-way at ok din ba entry level na morel sa rear-coax? Anong murang subwoofer na ok ang tunog, pa-suggest ng brand and model. Gusto ko is sound quality. Kailangan ko rin ba maglagay pa ng amplifier for my speakers and subwoofer? BTW car is Toyota Revo and I don't want to consume the rear for subs due to cargo.