Can you hear the difference in vinyl versus a CD? With your level of equipment, I would not expect you to be able to discern an improvement. In which case you would probably be better off skipping the turntable and spending the money on rebuying the CD versions.

Plus, a lot of classic albums have had new releases on CD recently that were completely remastered. Even if you can hear the difference between vinyl and CD, the remastered versions often blow away the original releases regardless of medium.