Way I see it, your bolt threads will be coated with putty, may as well just run the nuts up and call it good. I've mostly experienced galling when removing the nuts not so much on installation.
I also think you may want to put a spacer type border, a tad less thick than the spacers, around the...
as you probably know most any component on the motor such as starter, mechanical fuel pump, etc. will be easier to replace while the engine is on the bench.
