I deleted my original post by accident (facepalm).
Here are some options. Personally I’d choose something around the realm of 2.75 450 rpm (so ratio that are around that in/s value), and see how that feels. That is around a mid-range speed given the crowdedness of this field and also the fact that it takes a driver a long time to get used to a faster speed. For reference 40 in/s is slow and 80 in/s is super fast.