That's what I was thinking about to Aerodave. I was thinking I'd rather just invest the money and get a CP Pro, which has the components already needed to use LiPo... especially since it comes with one. I'd really like to get into a TRex but after the cost you incurred, it would be a while before I could even get the money to build it.
I did fly my CP in some pretty strong winds for its size and it did pretty well when i just put the nose right against the wind flow. The main thing I didn't care for was the fact that even when turned a hair off center with the wind, the wind would carry my CP off pretty fast. I did manage to recover but it sure as hell gets scarey at that point. I still use training gear when I'm outside, and luckily I did because she wanted to tip over a few times.
One question for you Dave... Is the TRex something I could fly with ease or is it another learning curve that might get costly? I'd be more in favor of one if it was something I could beat up a little without major damage to the bird, kind of like the CP.