Eddies Vs 915 J's

I think this will turn into a "how to match parts" thread...lol.
If you are "max porting" the RPMs you will need a cam with more lift and duration than the FL lobes you mention and compression to make it work. Take away lash and geometry & you have valve lift around .515. With the FL duration you note and the relatively low valve lift the ports will be way too large for that combo unless you up the compression above that 12:1. If you have them and they are "as cast", I'd leave them at gasket match and hand blend the bowls. You will be losing too much by going "full boogie" if you indeed wnat a cmashaft that small. I'd suggest looking into the Bullet FF277/373 or something similar if you do "go big". You have a short stroke, small bore engine. You have two choices: give it compression, cam, and port volume and rev it high (like peak power in the 7K range and shifting at 8) or keep the port volume down to keep everything else midler to make more torque where you can use it.