Thanks for all your comments so far. I've given some thought to moving things around, maybe getting the SVS front and center, but it's just such a small space that fitting everything in becomes really tough. I thought I'd add the most up to date pics here, being as I've been able to remove the Hsu sub since I got the SMS-1 and I've since added the Dynaudio Focus 140's. I decided to go with Era D3's as surrounds above the doors, less than ideal but it's the best I could come up with.
This is the current rack configuration, but I have since moved all the internet connections (modem, router, etc.) into the rack.
Looking across the front soundstage:
One of the Dynaudio Focus 140:
The Dynaudio vs. the Era D5.
My latest bass response graph:
Thanks for looking.