the rotary engine only looks good on paper. practical application was another story. I'd do an LS swap. IIRC, with accessories, the LS is 50lbs lighter. still maintain 50/50 weight distribution, parts are cheaper and more readily available, it's much more reliable, and it's a lot easier to find someone to work on it for you. I'm failing to see the downside :-)
Good luck with whichever route you decide to go with. Gorgeous car!