It always grinds my gears when someone wants to hack up a nice Tele to cram in humbuckers.
Here's my advice: BUY AN HH TELE.
Or, spend a few hundred $$$ on a new (or used) Mexican one that's already routed for a neck humbucker. Then you just need a new pickguard, plus you get to keep the classic Tele bridge pup.
But please, for the love of all things holy, don't massacre that thing with humbuckers. Get some better single-coils, or some single-coil sized humbuckers... something.