Here's JJJ's long hair links page, which has lots of links to long hair sites, including forums where you can discuss the best way to go. I am sure they would be delighted to welcome you, as I am delighted to hear of your wonderful long hair.
They often discuss the dilemma between allowing to grow to floor length, or cutting it to lower back where it can be worn down more often, is easier to brush, and does not get caught up in things. It's balancing practicality with living a dream, and much depends on your own private outlook on life.
There are also various styles and updos you can play with, non-destructive ones. With hair your length, you have the full gamut of fairy tale fantasies to try out, and all of them real!
One thing you should avoid. Long hair frames the body, not the face. Therefore you should always consider how it falls around your body, your breasts, your hips and the touch of it on your back and over your arms. Only short-haired people (and most hairdressers are aiming for short hair, because that is all they can understand) concentrate on the face only.
With your hair, I think I would go further, and think of it in the context of a beautiful wood in harmony with the branches and the twigs and the sort of nature it takes a lifetime to bring about. I think in particular of the weeping willow in early summer in the way the leaf-covered branchlets brush over your arms as you crawl to shelter inside.