You should never use anything less than 12-54 on a 24" scale guitar. Work up to that and stick with it.
Here are the guages you should use for each scale:
24" - 12-54
24.75" - 11-54
25.5" - 10-52
With the guitar then set up properly (I'm talking trem springs set right, intonation and with an action that's comfortable), then you shouldn't experience any extraneous string noise. The action should be set as high as you can possibly get it before it becomes uncomfortable, though.