That trim chart on the NSRCA page is a little dated, but it's a GREAT place to start. One thing I don't like is changing wing incidence to affect KE performace. If you do that, it messes up a lot of other stuff, and you end up chasing your tail.

We really need a new chart that's more tailored to the planes of this century. But with a plane like the one in the first post, that NSRCA chart is still about the best there is, and even then that particular plane isn't going to trim out quite like a modern 2M plane. but it will get so close it'll be the best flying one out there!

Good luck with it,
-Mike