No secrets I'm a big gear fan, and I would go slightly bigger. BUT I would also take something slightly smaller or around your 100" sprint gear. For sheets and giggles I started running larger gears for club racing ~ which was my segway into bigger gears. Always a mix of sprint and scratch and handicap racing. Normally I was running 94/96 but for the second half of the season started riding on 105". It did take a couple of weeks for conditioning, but after that I had zero issues with inter race surging and had a bucket load of extra speed for the end. I'd race at least one race on a bigger gear just to see how you go, and then back it off if you don't like it