As far as I know, the finish on Hwy 1 guitars is a light lacquer. Not Nitro Lac though. Fender usually calls it, Gloss Lacquer, though it's a satin finish on the Hwy 1's.
It should be a bit harder than a nitro lac finish, and may wear longer.
Also, it prob has some sort of urethane undercoating. Pretty sure that all Fender guitars have a urethane undercoating
unless it's specified "Thin Skin Nitro Lac", which is 100% Nitro Lac.
As far as a refin goes, it seems that you're putting the cart before the horse. I would just leave it as is and play it.
If it wears out and you don't like it, give it a refin, or sell it.
You never know, you might like it as it wears....?
I sold my '66 SG to my uncle. It has the original Nitro Lac finish on it.... Cracked and crazed and faded and scratched and chipped, Looks GREAT! Amazingly, he doesn't like it like that - It's not shiny enough for him.
He talked about having it refinished
I told him if he wanted a shiny guitar, go buy a NEW one (and sell the '66 back to me!).