That sounds like a great setup [img]http://www.**********.com/iBhtml/non-cgi/emoticons/smile.gif[/img]
Jaie is deffinately right if you must repot it sounds to me like you would be fine just to pop the plant and soil out of the pot then place it in the other pot soil still intact instead of cleaning the roots off.
Also the vft should be fine sitting in the water, as long as it isn't too high. Usually I keep my water level in the tray about an inch high. Every once in a while the tray gets pretty low but that's only because I've been busy and I space it off. I know nothing about it liking to dry out once in a while between waterings though. Personally I wouldn't suggest it. So you may want to put it about an inch deep into the gravel to get the water. I wouldn't put it deeper cause I have noticed the deeper it is in the water the wetter the soil.