Wait for full frame?
As a KM7D user I was very much in the same boat as you trying to decide to wait for the ff-sony.
I went with the A700 because I felt it would be a better match for my lens collection which is very similar to yours, save the CZ16-80.
After only a few hours getting familiar with the A700 I must say that I have no regrets.
Had I waited to be able to afford FF and no doubt superior glass (more bucks) it would be years down the road.
If you can justify the thousands of dollars extra that FF will set you back I say go for it; or pick up the A700 now and start learning what a fine instrument it really is.