Yep...I do have a rev limiter. My build would have zero reason to go above 6500 ever, but I'm not sure I wanted to go that high, so I was planning for a 6000 limit.
With that being said, If its too bad, I think the custom head gasket route is preferable to milling the pistons.
I have some J heads, I have no intentions of using them. The cost to rebuild them and get them near the flow of the RHS heads from Brian and have the same springs would meet/exceed the cost (and if I home ported them, this engine would be finished in 2035).
Planning on running the Comp XE274HR hydraulic roller cam, Air Gap, & Edelbrock AVS 800.