The one flaw I see in your build is with "0" deck and .018 head gasket the pistons will hit the head . you need a minimum of .030 on a tight motor, more on a loose one ( forged pistons)..because the piston will rock in the bore, and contact the head.....You can keep the compression up with a popup dome, or further reduce the size of the combustion chamber...The problem with the later, is you start to have problems with valve shrouding, and airflow will be resrticted...One thing with alcohol, is it needs compression (heat) to make it light....On our alcohol dragster the compression is 10 to 1....It will not start on alcohol, (but understand the mixture is very rich)...we need to start on gasoline.....The neat thing is how cool it runs...If the motor is 150 deg at the start line..it usually 120 at the finnish...I would really like to run alcohol on the street....the injection curve would be tough to figure out...Neat idea..