On a radial I leave at about 3300 and 12-14 psi, gets me in the 1.4s. Never tried a tire that can take a hit like a slick, but I'm sure the car could put down even better 60'.
I use a CO2 boost controller, so boost is adjustable irrespective of RPM. I think the car could use a little more RPM on the launch but about the same power.
I have always tried to get just over the converter stall speed while on the brake. This is a TH400 car