"Roundy-round" = circle track.
Be sure the timing tab/damper line is really showing you true TDC. Info on the different timing tabs/damper lines is here
. Info on determining TDC is here
That cam is not so big that the timing needs to be locked at full advance. Won't hurt if it's race-only, but if you drive it on the street much you can use an advance curve. If you go to a smaller cam, or want better street manners, I agree to use a dual plane like the RPM.