RAB,
The kit version's instructions say to put it 3.5" back from the leading edge, which is way to far foward. The CG on mine is just under 5" back from the leading edge and it still lands like a trainer.
Do yourself a favor and fly it in its current position before you start fiddling with it. You will see that 4" is plenty stable.
If you don't have much experience with aerobatic planes or you're just a little unsure about it, get someone at the field that flies aerobatic planes to give it a test run first.
BTW, here's some pics of my SE before I added the wheel pants. It also uses a TT Pro .46.
http://personal.mem.bellsouth.net/me.../RC/index.html
Tim