Re: Question about pickup output
The only real "trick" in changing pickups is knowing how to solder properly. If you haven't done it before, you should practice on something before you tear in to a nice guitar.
But, there's quite a few first-timers here who have done it without a hitch.
And, you can buy a pretty nice soldering station, and soldering supplies with the money you save from doing it one time yourself.
Hollow bodies, and semi-hollow bodies can be a bit trickier. Then, its more a matter of not scratching up the body while you negotiate the tight confines of the body.