I put most of these grafts in the bathroom in my garage with AC set to 80 and grow lamp on 25%. Since they are long distance scions I think this will be best for them. In a couple weeks if the buds start to push I will move outside to acclimate.
This is a sharwil I did 2 weeks ago with scions off my own tree. Buds are already popping. This one is in 90F greenhouse 50% shade, and 60% humidity. I have really good luck using my own scions. They usually pop in 2 to 3 weeks and those are the trees that gain vigor and take. If they take more than 4 weeks to pop they seem to stall and never take off and eventually die.
Brad, I've grown under grow lights and just a thought, not sure what lamps you're using but those lamps sure look far away from your pots. One of the best tools I have is an old analog G.E. light meter that registers up to 10K foot candles. No, it doesn't measure PAR but it's still a valuable tool, a guide. I'd be giving those faves about 5,000 f.c. Keep in mind Hawaii is around 22 latitude. For long day/short night plants I kept the timer on a 20/4 on/off cycle to induce vegetative growth. Citrus is photoperiod dependent, not sure about avocado.
FWIW, summer noon sun is 10k - 10,500 f.c., cloudless day, 27 latitude.
Good luck on the grafts. I must have 6 Sharwil that are shooting the moon, one on a Gwen tree.