Check my work-Chime in please

for what it's worth, I've had no problem with DCR in the mid-high 8's running on 91 octane. (iron heads, open chambers)

yours is 8.15. IMO it's not even questionable.

edit: is the lunati cam card you posted for the cam you have or the cam you're thinking of upgrading to? (to bleed off some DCR.... either should be fine really)