Hardtop, or CPR playfield swap is the only thing I would even consider today.
So many issues with the overlay. Even if a higher quality. Prep, alignment, clarity of instead when done, fixing cupped inserts, ball not rolling correctly, like you are playing on shag carpet, Wrinkling down the road if you have the game in a hot garage. I have first hand see all of these problems with overlays. Even if it looks good on day 1, think about 3-5 years down the road and 5k to 10k plays later. Durability has to be considered here.
Hardtop abd new playfield address all the above.
There is so much work getting back together, the cost difference to buy a hard tip is insignificant to the amount of effort to tear back apart and peal off a crappy overlay.