Easy. 50hrs
Orlando-New York-Chicago-Salt Lake city-Las Vegas-San Diego-Dallas-Orlando.
Don't waste your time doing a few hours a day flying round the same bit of the states like every other boring sod, be bold and see america. I did this trip and had some great nights out along the way.
(Tip- go to small airports, great service from FBOs, hotel discounts and free car hire)