HOLLEY SNIPER FUEL INJECTION ~or~ CARBURETOR???

These are all very helpful and I appreciate all comments.
Let me ask, my kit says unleaded fuel only, but I’m up in between 10 & 10.5 compression and a .567 lift roller cam, 93 octane just might not be enough so now what?? No race gas or av-gas?? Is this motor too much for what Holley offers currently??
A lot of other fuels outside the pump is unleaded. The VP I buy in 5 gal cans for small engines on my farm is all ethanol free and unleaded. Not too sure if leaded fuel is even still available even in small batches. Lead help lubricate old school engines but not needed with hardened valve seats.