Good to see you approaching your build in the right way - Being cautious and talking to Van's when unsure.
It's a difficult intro to an RV build - working on the first real structural part, where one hole drilled through 3 or 4 layers can ruin your day. I have a few (4!) spare HS-702's, not to mention a box full of front spar reinforcements..
Something I found interesting - having built two complete HS's - On the non-SB HS front spar there aren't any areas where lower than normal edge distances are acceptable, yet on the SB version there are multiple areas where less than perfect edge distances are approved by Van's. Even on critical structures, less than perfect edge distances are sometimes acceptable with Van's approval, indeed sometimes unavoidable. But always
check with Van's!
Good luck with the rest of the build - This front spar area is the initiation!