I am looking for advice regarding the components for my audio upgrade. (Please excuse my ignorance)
I have decided on the alpine IDA-x305.
I would like to upgrade the necessary components (Wiring, amps, speakers, sub, etc) in hopes of a really crisp system with a decent punch, without taking up too much space.
Due to this being a base coupe I currently only have front speakers.
Are the factory front component speakers adequate? Is there a factory amp that needs bypassed?
Somewhere on the forum i came across a clever 6x9 install in the rear sides. Is this worth the effort?
Recomendations for a sub/amp setup? I don't need anything thats going to rattle the car to bits.
Is a capictor required?
Any recommendations for an install kit (gauge of wire), or speaker setups are greatly appreciated especially if you include links

.
FWIW I am addressing all the rattles with dynamat/foam/felt prior to the install.
Thanks in advance!