How long will it be until you flesh out the surround system? If its any significant amount of time, Id just get an integrated amp. The new HDMI receivers are pretty new, and by the time you actually need all of the things it can do, you can either get better for cheaper, or get todays' offerings for that much less.
The integrated amp can be sold, used elsewhere, or you might find one that has HT bypass so that it can be combined with a future receiver. Just an idea to consider.
oh, I have an Onkyo, and no video issues. I don't use the receiver for any video processing though; the only reason it even goes thru receiver is for lossless audio. Looks tremendous on my enormous screen with RS-1 projector.
The above is just my preliminary opinion. I think the biggest factor will be the answer to my question.