Finally, an update. Looks like I'll finally be brewing this beer tomorrow, after a 3-month delay.
Grain was milled 3 months ago, but has been stored in air-tight Gamma buckets, so I expect it'll be just fine.
I'm going to look over my recipe again tonight when I get off work, I'll post any tweaks. I might try out a Hochkurz decoction of sorts. One rest in the upper 130's/low 140's, then decoct and raise to upper 150's, then mash out as normal.
I don't know which is worse, that I had to wait three months to finally brew this beer, or that I've only brewed twice in that timespan...