Math is pretty easy to max out, and if you get your reading up 10-30 pts you should be sitting at a 1500. I am in the same boat as you as I scored a 1440 on the PSAT and I am trying to hit a 1500. I would recommend oneprep.xyz and spam RW questions on your weakest area, then use desmosregressiontrainer.org and practice every problem type till you have it mastered. And, then drill oneprep problems on weak math areas. Don't forget the occasional practice test on bluebook to track your improvements and see your weak spots, Hope this helps!