race fuel $7.59 a gallon

I,ve got to get a different plan. They just raised race fuel up a dollar a gallon, so I think i'll try something else. I've been running a 50/50 mix of 111 octain and 93 no lead prem. Now I think i'll try octain booster with lead instead . What is the best octain booster or fuel additive, any thoughts? This is for a 12.5 to1 cross-rammed hemi with a medium hydrolic cam.