Just completed the system. Will provide feedback soon.
Owing to the amount already spent, the only upgrades in the system could be replacing the nterconnect and speaker cables with Kharma Grand Reference cables and that will be the end. I work for a living and have to stop somewhere.
Lall, one more thing, your cables could be much better than they are. The Cardas stuff is great but it is definitely not on par with your other components.