So... I was wanting to make a guitar for clean sounds and soloing, I am gonna put in 2 single-coil pickups and 1 humbucker pickup(for rythm). Where would I put the humbucker? Closer to the bridge? Closer to the neck? Or in between the two?
Its completely up to you dude.

Personally, I dig a humbucker in the neck area, a nice fat wound single middle pickup, and a nice edgy humbucker in the bridge.

Usually, people use lower output pickups in the neck and pickups with better treble response in the bridge.

Try listening to some clips of Semour duncan jazz, 59, jb's, everything. Just don't get the fender noiseless.
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Haha! Why would I be worried about noise? That's what I'm trying to make anyways. Are P90s any good for clean sounds?