if it was me, i'd go with Focal stuff up front, throw this
Custom Sub Enclosure | Affordable Sub Box in the back with some velcro strips to keep it from sliding.. hide amp for front speakers behind seat or stuff it in front of the spare tire with sub amp and re-q. headunit i dont know much about, though. i have nav, and my last 3 builds were all LOC style with stock HU to keep prying eyes away