i think if you can do it, then great! i think taylor dent did this in some of his matches against big servers.
as for 1 handed backhand flat/topspin returns, i would suggest a short backswing, and remember to follow through on your shot. perhaps try setting up a bit back more than usual and step into the shot. to be really effective on the return, have good anticipation step in and swing early. make sure to make contact out in front. if you're hitting it late, you're not getting the racquet out in front (ideal contact point for 1 handed backhand). 2 handed backhands are a bit more lenient as they can be hit late yet still have a nice solid shot w/ directional control.