For whatever it's worth, I did all spells :) I just was much more careful when it came to spells with effects, damage, and other items that required applied effects as well as those spells that could be upcast.
I also went through and did all the formulas and skills, etc., that had applied conditions or damage.
As you well know, it's a beast to do it all :D Like my (SR) Bestiary, I hope the day when it's rendered negligibly useful isn't too far down the road. We are getting there with the automation to the Bestiaries and look forward to when that focus can shift to other things like Spells and Skill Actions, etc.