Looks good - would be very interested so see some work in progress pictures. Showing the sub enclosures, that it looks like with-out trim panels etc.
What does it look like from the boot?
Is there another amp somewhere for the speakers?
If you are going to get a head unit I would say with all you have spent go for the 9887, your dealer should be able to sort you a deal and getting it IMPRINTed for you, specially with how much you have spent with them