A Co-work has a 2016 Silverado Crewcad Bose with center console. He is look for a good sounding, balanced system. His budget is $4k, and I'll be doing the install for him.

His requests are:
1. Keep the factory look and simple.
2. No big box under the rear seat, atleast not the whole length. (Ok with losing the space under the passenger side of the rear seat)
4. Budget for everything $4k

This is what I'm thinking, but not limited to.
NAV-TV M650GM interface (I love mine)
JL Audio VX700/5i
Audiofrog GB60
Audiofrog GB15
JL Audio Stealth console subwoofer enclosure
This setup comes is at about $3.5k and it's simple.
Any thoughts or other suggestions greatly appreciated.

Thanks in advance!