yes, low timing.
I would run 25 initial timing at 1000 rpms, 38-40 total mechanical in by 4000 rpms.
and use the vacuum advance if you drive it on the street. Use an adjustable vacuum advance canister set to 10 degrees.
The vacuum advance will not have much vacuum to work with due to the big cam. Will need at least 9 inhg which most likely will not happen that often. Maybe while driving down the highway or revving it up in neutral.