Joel,
I live in the Idyllwild area, and if you want to take a trip, you're more than welcome to visit my little shop. I've got some trees you can look at, photos, and saddles that I've made. Now, I'm not trying to sell a saddle, but offering any advice that might help you. I think I know the maker you mentioned, and I've repaired a few of his saddles. Anyway I can share with you some ideas about where to start...oh yeah, and confuse even more about trees, designs, rigging, etc...
Ron