Using the 609, might be fine, but you really need to figure out what you're trying to use it for and with so you know for sure.
Do you want to have a network receiver?
Are you going to be multi-zone?
The speakers it will be driving may be an influencing factor.
Volume levels may be a contributing factor.
I would take a serious look at the Andrew Jones designed Pioneer speakers. They are excellent speakers, made even better when you consider your budget. You could get all 5 speakers for under $500, use the other $500 for a kicka$$ sub and anything else you need (speaker wire banana plugs, etc) and the system will be great.
I'm sure there are other suggestions, but that receiver, with these speakers and maybe a PSA sub will be excellent.
Word to the wise, be wary of advice you get on HTF, especially from schan.