Others here have answered with far more experience and wisdom about things to think about regarding your choices. I won't offer any advice, but only a couple of observations.
I saw your post on Reddit and the answers there suck. ( For other folks here: They mostly were telling him to go shoot digital and not waste money on film or time on a kind of photography that is obsolete and going away.... and that he is sticking his head in the sand for not seeing that film is dying. ) I thought those responses were inappropriate and even more so since we're talking about LF.
Anyway, it occurred to me that $5K is not a completely outrageous amount to spend on a long term supply of film. For 35mm that would be like having 100 spools in the freezer. I don't think I'd have that much, but I could easily imagine having 10 or 20, and my film use is slow and deliberate.
Good luck and I wish you well!