looking at those frets here .. you still have plenty of height on them. and could probably get away with fixing them by sanding down and re-crowned.
I've added the photo you added onto the whatsapp group.. I think it shows better the extent of the wear
https://community.guitartalk.co.za/d/26611-guitar-set-up-101
I've linked the guitar setup thread for reference where their is a video explain how dress and crown your frets.. just be aware.. its soft metal and light sanding has a massive effect, use a high grit paper and a light touch.
If i can suggest some YouTube channels to watch which offer great DIY advice.. Crimson Guitars and Guns and Guitars are both worthwhile.
I Curious to see how this ends up, that neck has a nice flame on it, and could end up spectacular
despite my "research" which was honestly done for the wood despite what I posted, I really want to see how it goes , do you have an Idea on the direction you want to go in-terms of finish?