My only thought is how much heavier is the neck you want than the neck that comes stock on a SG? Neck Dive is extremely frustrating.
Here is one more thought, Do you want a Axe you are playing and gigging with? or a show piece?
It is hard to take a beautiful guitar out and bang it around on stage, they start getting nicks and dents quick when they get taken out of the house.
So how much do you want to invest into a axe you are going be onstage or in a garage where guys are moving around and bumping into things?