Interesting choice of authorities here.
Given a choice of gunsmiths to take advice from, my vote is 100% Steve Durren, Larry Potterfield won't come in even a very distant second. Especially in his "make everything simple, leave out all the real steps" videos.
I'd use it as is, reline it to .22 mag as you want and have an easy, affordable shooter. Or, pay someone who really knows what they are doing convert it to Centerfire the correct way.
You might consider using Steve as the gunsmith, his work is excellent, and he's honest and dependable. Hard to find all of those three qualities together in one high quality package.
Another gunsmith recommendation for a reline is John Taylor who posts here. His reline work is some of the best in the business, and he is also honest and dependable.
Two of the best single shot gunsmiths in the business.
dave