That is a pretty low end system. I would definitely aim for a better CPU. preferably an I5 or ryzen or better. The GPU is fine, but do get the newest generation. The 750 Ti is a couple of years old now and way less powerful than the 1050 Ti. The rest is all good, but note that you will need DDR4 RAM if you choose to get a newer CPU (which you should because the fx 6300 is slow).
I'm aware that it is low end... He said keep it under $600 and i couldn't fit an OS in with a ryzen or Intel chip... I tried an fx 8320 but it didn't quite cut it... Would it be able to run PC on medium at least?