RR tracks I cross as close to 90 degrees as possible on any kind of bike.
For uneven pavement, on my DF I don't bunny hop I just raise off the seat. On the 'bent I do the same.
I've hovered around 200 lbs for a long time, have ridden a 'bent tens of thousands of miles on 1 1/4" tires at 90psi, and have not had an issue with pinch flats. I'd say don't overthink it and just ride.