so 1900 RPM would put me right at 1184 ft/mn but to do that I would have to run 31 inch tires I think the 29.6 tires should work just fine at 55 i should be running exactly 1900 rpm per a off road guys calculator to get final drive and rpms at different speeds, I dont want to go any bigger and not be able to go up hills or always be down shifting the calculator is here for anyone interested in difference in rpm for different tire sizes or gear ratios
Gear Ratio Calculator