How about Denon 2807 + Axiom Epic 80-500
Am a novice with little experience in the world of HT - most of it around my current HTIB setup. But I am in a similar situation as yours and thought I could share what I have been thinking for my HT in case it helps (with views from others!)
I have been thinking about the below for sometime now:
Denon AVR 2807
Axiom Epic 80-500 (
http://www.axiomaudio.com/epic80_500main.html)
I was thinking of starting with a 5.1 if budget doesn't allow for a 7.1 right away and would add the two rear surrounds later
This system is a little over $4K for the 5.1 but I have read only good things about the Axiom speakers. Best part appears to be that they (Axiom) allow you an in home audition for a month under their complete satisfaction guarantee.
Later adds (that I have been thinking) are the Emotiva MPS-1 and the surrounds (if I can't get them right away!).
Am sure you must have thought about this too, but I would still say, mark enough money for cabinets/Rack, power management and wiring!