Doing the math on what's the best one running my gearvendor and the 2:73 is to high I'd have to be about 90 MPH to get the pump pressure in overdrive working right.
not sure on the rest haven't figured it out yet because I'm lazy. lol
Maybe give gear vendor a call for their input? Let them do some leg work for you? Tell them you want to optimize their equipment what ratio makes their product work best? I bet they would be happy to give you some direction.