Wow, that's like 37km/h. I could probably roll round all day at that speed in 90", on a mass start bike, only pedaling with one leg.
You should set your goals higher, to completely smash the record, and make sure your untouched and be a god at your track forevermore.
Seriously, a gear in the mid to high 90's - whatever you can stay on top of for an hour maintaining reasonably constant cadence. Go longer crank arms, aero bars, and a disc + something aero on the front. Skin suit and aero helmet. I'd be surprised if you couldn't sit on 45km/h pretty comfortably.
Unfortunately for me, the world masters hour in my age was set on my home track. And there is a big difference between sitting on 45-47km/h and around 50km/h. Damn you Jay Austin.