Hi there, I use BFG drag radials on 15" centerlines at 18 lbs. I brake torque to 1800 rpm. I let it shift on it's own, with the OD on.
I did manual shift a few times, but it hung between 2-3.
I also tried it with the OD off, but it hit the rev limiter before the end of the quarter. I am actually in OD at the 1/4 mark.
I think you are doing good, the 60 ft. will improve once you figure out just how to best launch.
ZETEC CREW #123
ATX Faction #48
PW. Lentec. Eibach. MBRP. CFM. Comp 2's. NOS
1972 Mach1 351C