suggest you go for HU and components. the active sub really wasting money only.

hahaha so early you poison ppl.............

now the poor boy is confused............

Bro,
change to components, not 4" but 6" comps.
add the active sub if you must (i suggest you listen to the comps 1st then decide if you still need the active sub cause you can easily add later)

you will need to build a mount for the 6" midbass speaker at the door.
no need amp, just wire direct to HU.