Where are you planning on putting the equipment you haven't installed yet?
DLX3's on the rear LP and the D6 on the rear deck or in the rear headliner, with the two single sync Talons in the headliner left and right of the RVM?
You could sell the D4 and get a 10-75 bracket and a pair of LED3s for the front to give you intersection warning. You could also pick up a Charger TLF if you wanted some good inexpensive warning to the rear. Also a HLF (if you can have them) would give you some great warning to the front.
Looks good so far. Looking forward to the updates as you install more. Take a video when you get a chance too.