Is my engine low on vacuum????????????? Help?????

Engine specs first.
340 ci
10.2:1 compression
Edelbrock Rpm heads ( box stock no porting)
Edelbrock Air Gap intake
Holley 650 DP
20-227-4 - Xtreme Hi-lift Hydraulic Flat Tappet Camshafts

What kind of vacuum should I expect with this cam at idle?

My vacuum gauge is showing 7 in. of vacuum at 800 RPM with 14* initial timing. What are your thoughts?