1.) Without taking it all apart? Probably not. Also, not worth the hassle.
2.) I guess. Depends on what you want (coil split?)
3.) If I'm not mistaken, Les Pauls need long shaft pots (not 100%)
4&5.) My advice: go to the BKP online shop - you need:
2x BKP/CTS 550k pot (neck&bridge volume)
2x Regular 500k pot (neck&bridge tone)
2x Jensen BKP 22n capacitor
If you want coil splits then substitute one or two regular 500k pots with 500k push/pull pots (two if you want each pickup to have it's own coil split or one if you want to have one push/pull for both pickups). Either way, be sure to use push/pull pots in place of the tone controls and 550k pots for volume.
The caps in your gibson are ceramic (cheap). You don't NEED new caps but the ones I suggested are definitely a tonal improvement. It's up to you. Again, the weakest link in the chain....
