I know it's a bit late for this, but there's a crap ton of stuff to read in RoP:D.
I've finally read up on Gematria and I'm not certain that allowing Gematria but using the Bible (or some other book) instead is really legit. Gematria is very, very tied into the Jewish tradition. It doesn't seem to correlate to Bible study. And Shinnui Shem is a Kabbalistic methodology. It just doesn't translate well into Christian Theology.
Basically, the rules give a bunch of cool things to Christians and a bunch of cool things to Jews. Co-opting Gematria into Christian learning seems like it's trying to have your cake and eat it too.
I'm thinking that most of what Adauli wants to do could be done by swapping out Meditation for Gematria.
And really, how many super cool Major virtues do you need? Most magus designs center around one, maybe two major virtues (three at the most for mystery cults). By my count, Paulos is up to nine major virtues (and something like sixteen minor virtues). Surely the build can take losing some of the super cool Gematria benefits.