I think it will be easier from the cavity given the distance.

Less than an inch from the post center, looks like.
Didnt really visualize they were so close.
Used to thinking in P-bass terms.
Pretty trivial after all.
Plugged the side jack hole.
Occurs to me that if I dont like how the plug looks after sanding it down, I can re-drill it centered & cover the whole mess almost entirely with a jack plate.
Originally was going to recess the plug and then putty. Chickened at the last minute and moved it out so I can sand flush instead. Grain might match but there'll be a fill 'ring' to deal with. Hole was raw. Looked like they used a spade bit.
The edge roundover will almost certainly get into the plugged void. Cavity cover recess might, too. Not much wood left there.
Pretty sure I'm going to sanding-seal all the edges before finishing, so the black burst can show no grain on the edges while the gold top and back will.
The gouge fill by the pocket will be smooth no matter what. Had to build it out with epoxy wood, then will sand back, so it wont have 'grain' that matches.
Near 90 in the garage. Time to move inside and work on cover recess template design.