After a ton of research into Sheiko on this forum:
http://sheiko-program.ru/forum/index.php
I have figured some things out about pullup programming:
(1) The constant maxing I did when I re-started pullups only worked for a little bit. The high intensity training I did after that was OK but inconsistent and too low on volume and warmups.
(2) 50% average intensity is sustainable, even training 3x/week, for a large volume, and shouldn't interfere too much with climbing, which for me is almost entirely limited by technique and finger strength/endurance.
Intensity can peak as high as 70%+ eventually. But since I am climbing on the side and am in intermediate mode for pullups and bodyweight training in general, plus am doing high intensity one arm work, 50-60% avg. intensity is more than acceptable for at least one training cycle.
So That all being said my plan is, I'll increase volume throughout the month and then maintain volume and increase intensity. Avg. intensity of 50% is 6 reps, but I'll be pyramiding so I'll still be working with sets in the 8-10 rep range as the month progresses, and possibly a bit higher if my strength is increasing. I'm also adding in a low volume of weighted work, starting with 60% intensity or so and increasing to a heavy 1-2x2 over a month or so