Got it going pretty smooth at this point. I installed the Ubuntu+Unity ISO and am getting ready to install gnome-session-flashback all by itself as you mentioned. I'd like to give Unity more of a chance but I cannot get the buttons to move to the right as I am used to. I keep pressing the wrong window buttons. Here goes..... What could go wrong right?
The above is what I did and found the Ubuntu Unity with gnome session flashback to be almost perfect, and I also did it for same reasons buttons on the right side.
3 days and still going strong, well least mine is