First engine build question

A RRR said, just put it together, and if it ends up being fussy on pump gas, run the premium, pull about 5* or so out of ignition timing, and if it ends up in the dump for compression, grab the timing by the leash and yank it up over 40* full advance. I've ran a lot of "no compression" engines around 44*, I couldn't care less because if it has flow she'll run like a rabbit with the dogs on the trail.