What TT said, it's all intertwined.

But as for a go-fast bike, running a higher ratio, longer cranks will help out with torque, while sacrificing spin. But at your height, 175mm may very well be the spin-sweet spot. 180mm, maybe 185mm for torque. It's all personal fit.

Would recommend 27"s as well, if it weren't for the disparity of tire selection at that size. It would add some room for cornering at speed. Which would be the biggest concern when it comes to pedal strike.

The higher BB shell on any bike with track geo will help alleviate some issues of a longer crank. Still, this is cornering on flat ground, not the bank of a track.

I'd stick with shorter stays, in general, if possible. Helps keep the rear triangle stiff and typically leads to a more nimble, and solid---depending on the front end---tracking bike at speed.

There's bookoo DA track cranks on the ebay in big guy sizes. Not to mention the road cranks and Shimano 105. Q-factor, though.