A PSA of .36 four months after surgery means mets. Delaying treatment to go on the trip provides even more chance for cancer to spread. I lived through 3 bad cancers, all different. I missed a trip to Superbowl in 2020 to have cancer treatment and I'm still going strong at age 75. For me and my family, stopping cancer and it's spread was way more important than a trip. Do what you think is best for you and yours, and best wishes to you.