Buy car now or wait?

I have been looking for a car for a while and I found the perfect one at a dealership (certified pre owned). It’s a hard to find car but at the same time probably hard to sell, unless you are specifically looking for it. It isn’t made anymore.

So I have no idea how fast it will sell and I was planning to go out and see it this weekend, but I’m torn because I will finally be paying off my credit cards in full in 3 weeks. It will raise my credit score by a lot and I’ll be able to get better financing terms. What do you think? I’m not sure the car will still be there....