My take on Charm selection:
Considering the varied Charms and such, I think we definitely want a Lore Excellency (helps with the Dragon Seal, and is a prereq for the Lore Training Charms AND twice over for Wyld-Shaping). Admittedly it takes a single day to train, so getting a second one is wasteful unless we plan to quickbuy Wyld-Shaping right after. I could also see fast-training There Is No Wind for our combat ability, since it's cross-applicable to Thrown and hence the Heartbeams.
I'm personally enamored of both HAM and SFF, the first because "army of wizards" and the latter for kitbashing together a week's worth of coding in a day and getting 'safe' access to CNNT, but I also acknowledge that immediate problems take priority. They both take a good part of a week to train so HAM might be appropriate for a "reserve" quickbuy slot later (due to its quickly-scaling benefits the earlier we get it; consequently, I am in full support of saving several quickbuy slots until we need them or Hell Week is over).
Wyld-Shaping might be intensely useful as a stopgap measure, though given the timescales involved it's probably viable to save quick-learning it for just when we need it. In light of it taking up to 15 hours just to perform and all.
God-Mind Algorithms is pretty rad for maintaining the Dragon Seal programming, I support that as well.
We don't need to spend valuable capability-expanding xp and quickbuy slots on Yet Another Occult Excellency. Lore, maybe, for the sale of prerequisites, or perhaps the Third Excellency if we're drowning in xp. Not Occult.