I love this site. Thank you! I swear my brain hurts from all this knowledge I’ve been cramming in it from the past few days!
Don’t forget to eat, and sleep sometimes ! 
Food and sleep? Moog gear renders those things optional!
But seriously, I do not condone going without food or drink for more than 24 hours at a time…even if I do so regularly.
Apps and plug-ins are great, but if you happen to find yourself using any sort of CV pitch controller and have the auto-tune turned off, you’ll probably want to check your tuning often (particularly playing live). I picked up a small korg chromatic tuner for a little over 10 bucks, then I ran a short patch cable from the headphone OUT of the Phatty into the tuner. Now I can check the tuning anytime on-the-fly, even while I’m playing live (although I tend to only do it between songs in calibration mode with the volume off). Just a thought. 