With your rigor and a 1450 SAT and at $50k, Arizona will be a great value as it’s one of the tops physics schools. If you like CWRU, Rochester is attainable as is Pitt (might not make budget). U Denver and U Miami are two others. RPI could work.
Staying in the Midwest, Miami Ohio (safety) and Purdue are two other fine schools to make budget. Iowa State, Mizzou, KU and K State too.
If you find you have even less to spend, you’ll be able to go to Alabama, UAH, Miss State, Tennessee Tech, UT Chatt and other schools for low 20s - certainly the first three - with auto merit (the SAT matters). FSU could be another along with UCF, USF and UF would be right at budget.
Just a ton more too if you got a bit more detailed than not an office building. Size, location, weather, etc.