Welcome to the club! As others have suggested, I would look at several before settling on one airplane. I would be concerned about having to do an overhaul in less than 300 hours. When I was looking for my 150, I was looking at aircraft that had about 800-1000 left until overhaul.
I don't want to scare you but my advice is that you should prepare for the worst and hope for the best. By that, I mean, be prepared to have to put some money into the airplane. These aircraft are 40-50 years old. I ended up finding one that just had a (field) overhaul (8 SMOH) and it now has 22 SMOH. I'm putting four new cylinders on it right now. Plus rebuilding the mufflers, two new mags, new gascolator, new brakes, new control cables/pulleys, and several other things I can't think of right now. And I HAD A PREBUY done on it. No biggee, I knew when I got into it that this could happen. I had just hoped it wouldn't be quite so soon! What you want in the end is a very safe plane that you can feel good about flying yourself and others. You never want to have a question in the back of your mind that something could be wrong or that you took a shortcut somewhere. You can't just pull over to the side of the road if something breaks. Good luck with your decision, owning an airplane is a great experience.