There are two things you can do:
1 Put a .047 mF cap in series with the neck pu hot wire to thin it out, but even better;
2 Wire up your Les Paul with a master bass roll off and master treble roll off. This is great for on the fly tweaks in tone with quite a bit of range.
I have a Gibson 498t in one guitar which sounds sort of overbearing on it's own, but roll a bit of bass out of it and it turns into a magic pickup.