It depends what you mean by "short term". His overall plan is:
1) set some aside for retirement
2) donate some to HTLC to help rebuild (FYI, for Zweiblumen and Herr, it was shot up during Chapter I)
3) spend some to finance the upcoming operations
Now each of these probably has several component steps. I'm going to be treating the money as realistically as I can from an IC perspective rather than splurging on things that might be fun from an OOC perspective. I'm enjoying the trenchcoat/mirrorshades aspects of the game and don't want to turn it pink mohawk.
It will occur to Achak that the most sensible approach from a risk perspective would be to hire shadowrunners to take out Sunrise assets for him. Again, I don't wish to change the nature of the game so I'll avoid turning Achak into a Mr. Johnson for the moment. His drive for revenge for Stake will keep that notion at bay for a while.
Going down the list:
1) Achak knows he'll need a lawyer, accountant, and financial adviser. He also knows that it's Friday afternoon and that things like LLCs, tax strategies, and investment plans take days, not hours. He'll ask Duncan for reputable referrals, but Achak might have to stay alive for the weekend to take advantage of them.
2) Achak is not opposed to handing over a credstick to Pastor Llewellyn, but he doesn't want to create additional security concerns for the church (by having a fat certified credstick floating around). He'll want to make sure that the money is donated the 'right way', which may be contingent upon what happens with #1 above.
3) As I mentioned before, our greatest constraints here might be time and Availability. I don't know if Duncan has procured things in the past for Stake & Co. or if that has been Rose/Raven's job. Similarly, I don't know if rednblack wants to use a flat Availability rating for what we might have access to or whether he prefers to roll for each item.
Mal's wishlist of glasses, a receiver dongle, sensor tags, and full body armor is a good example of reasonable, practical gear that Achak is willing to underwrite. Similarly, Eli's old gear (including the sawdust grenades) might make sense. Laser weapons and other exotic gear that we don't have the skillsets to employ are probably not on the list.
Is there any equivalent to sawdust grenades for wendigos? Can we get mini-grenades full of iron filings instead? Could Mercer make them with the Armorer skill? (Achak has Armorer too but not the Logic to make much of it.)