I have the VR3's and center its a VR920 and I made a center out of a VR2, I also had a VRC and I sold it because it didn't have the output of my 920 at higher volumes, I guess you now that the VR1 its a two way and the VR3 its a 3 way and it plays at lower frequencies, I can use my VR3's without the sub and they do a really good job
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if you are going to build a room later for your system I definitely buy the bigger towers for now and add the sub later
Another speaker that you want to check out is the svs SCS-01
http://www.svsound.com/products-spks-scs01.cfm