Generally you should be able to run a jet pump at a higher pressure. If it wasn't capable it should list that which yours doesn't seem to. Hard to give a definite answer as all pumps as a bit unique despite being very similar.

Reading your question again it's clear that you're not worried about maximising life. If that's the case I would turn the pressure switch up and test it at a higher pressure, deliberately cycling it to see how to responds. If the pump on time is reasonable compared to the factory 20/40 then it should work for now even if it's shortening the overall life of your pump.