There is a 3rd option. Go get fit, but don't buy new clubs that have been fit for you quite yet. Use the fitting to learn about your game, and maybe to search for used clubs that may be a great fit or really close to what the professional recommended.
It may feel like a waste of money to get fit and then not buy clubs, as it isn't cheap, but the amount that you will learn about your swing and tendencies might make it completely worth it.
In 25 years or a bit more, I've birdied every hole, had eagles on all four par-5s, eagled one (maybe two, not entirely sure) of the par-4s, and have one ace on a par-3. I think that calculated to be -24.