KR.. its rule one.. no KR..everything else will always fall into line.. if it doesnt, your not hurting the motor.
Drop your timing, add boost in the chip, start trimming down the fueling to make up for the alky being sprayed. Typically you should be able to hit 20 PSI without almost any tuning. Just watch your KR.. take it from there. Your intake air temps will come down with alky.. but its a who cares if the motor doesnt KR.
Start on getting the tach flutter issue handled.. then move from there. Call me tommorrow ... i'll get you the cap and some wiring for you to play with.. OK?
Julio
727-526-9724