I would tend to agree with Cab and using the manufacturers recommendations for sure, especially when using nee pieces. I don't think you will need to see near the RPM you think you will. Have done a bunch of b1 stuff over the years and with those kinda cam specs id be willing to bet peak is closer to 7000-7200

"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"