You might have to go a little higher in spine than normal. But my guesstimate is based on my pre-Firebird model (basically a 60" firebird) that seems to shoot best for me with around a 95# spine. That's using a 32" arrow with a ~55# @ 30" draw and a dyna 97 string. The upside is that these models seem to tolerate a whole range of brace heights so you should be able to tailor something.

Your mileage may vary...

RC