What's your injector duty cycle? You need to figure your duty cycle will go up 30%. My caveman math says if you are close to 75% you will be on the bleeding edge of your injectors capacity. Can't find anything on that pump, never heard of it. My guess is its fine as others have ran e85 on stock pump.

Kroger sells e85 here in Columbus, as well as speedway. Shouldn't have an issue in Ohio finding it. Just Google e85 locations, I know there is a website with listings.