Yeah, as others have implied, climbs are only "over threshold" if that's how you do them. Burning matches on long, non-competitive, rides with huge verticals doesn't sound fun.
Two weeks isn't very long and unless you're young and in great shape, packing it with lots of intensity is going to burn your biscuits. I'd do a lot of slow volume and maybe two or three threshold workouts, like
4 x 8s à la Seiler 2013, and then take a couple of days off, but I'm old and broken down.