I think I'd get a second opinion about replacing all 4 tires. I would get the same type of tire as the other three. I've never heard of replacing all four tires unless the other three were in bad shape. If that were the case, people would be replacing tires all of the time when they got flats, etc.
Do you have a spare? Use it for the time being and do the research to get the best deal on your tire.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
