How much time do you have for tapering?
Based on your above post…
these 2 lines:
workhorse not racehorse
I think being able to sufficiently recover regarding food/sleep on a glacier at 10k for a week will be my crux.
IMO = keep adding to your base
Last thing you want to do before your “event” is overtrain/overdo it and push yourself off a cliff/get injured. Especially when your “event” is not necessarily about moving quickly but moving consistently and in control.