That's cool stick w/a plan that you & your budget calls for.
I was just throwing out some ideas, ("the while your at it syndrome")
I was just mentioning that if you could get close to a zero deck your quench would be better, less likely of detonation will occur.
As far as having too much compression w/a 4bbl head, easy to open up the chambers & drop the compression as you already have.
Just some thoughts. I just do not like to leave HP (or a better running engine) on the table & not in the engine. Time to spank some of those V-8 things.