Try Torco additives then, or have a 55 gal drum of ethanol dropped at your door and make your own mix... There's always a way if you want it bad enough. Hell, you could even MAKE your own ethanol, being from Virginia, I'm sure there's some people down there with the knowledge
Lastly, 7* of knock is ok on stock, but with a smaller pulley you're pushing things, better save up for an engine swap, just sayin!