Perhaps when I go to 95 I will upgrade. At the time I just wanted to be rid of chain tensioners. Lots of problems people are having with them. I had a vacation coming up and wanted to go a simple as possible to head for the coast. Which I did. My Harley mechanic said it was a real good upgrade for the money without having to mess with springs and heads. Rejetted and SE air. Lost about 10 mpg. But worth it.
Good advice! :-)
When you're ready to play with the springs and valves, just go with SE heads. It's like bolt on magic! They can handle most anything you throw at em. Not sure if you can or want to go up to a .610 lift, but able! :-)
(PS: I'm an Evo guy, one cam at a time) :-)