Depends what you want from the tree. I’d repot spring in to the style pot you want, then probably look again in 2 years and trim the roots to further encourage growth to the pot. After that I’d leave it for a few years before touching again.
Generally my pines don’t get reported for 5-7 years - unless they are young and very vigorous, then it’s more like 3 years.
Or, you could make it a cascade, depends on what you like.