Before I go ordering components, I figured I'd check with the experts.

Just looking for some better sound since the stock speakers are really harsh. Nothing competition quality. Doing the install myself.
HU: Pioneer F-X710bt (already installed)
Amp: Alpine PDX-5 (5 channels, 75x4, 300Wx1)
Front Speakers: Boston Acoustics SX60 Components
Rear Speakers: Boston Acoustics SX65 2-Ways
Sub: 12" Phoenix Gold XS DVC (already own from my H.S. stereo, haha)
Enclosure: Audio Integrations 12" Trunk Box
Sound Deadening: B-Quiet Ultimate