Even if you have it growing in the ground its a good idea to pull it out and root prune every few years, and you can fix any compaction problems then, as soil compacts it slows down drainage and prevents the roots from getting the O2 that they need to thrive.

This is a hard one, too bad you didn't do it in March. Be very careful with water now, and if you do see any signs at all of trouble, don't wait and do repot into soil with lots of grit (small aquarium gravel, or chicken grit from a feed store, or crushed lava rock, or even perlite, plus bark bits no larger than 1/4" if that, plus a little large particle, non-peaty soil. But if things seem ok, as the pot's large enough, wait til next March/April.