I never say this; I never do. BUT I wouldn't get a horse, if I were you. Not from what you have said your goals are.
All I ever wanted in life was a horse of my own... and, I got one, when I was... um, maybe 28? And I loved him dearly, and he was awesome, but it took all of my time and all of my resources to maintain him. Bye-bye any intensive lessons, bye-bye any thoughts of becoming a really advanced rider; all I did was work, go home, muck, groom, feed.
I chose his sire, I was there when he was born, and I trained him myself, which was a great experience. And we would go on rides - sometimes 20 miles or so - but I didn't have time or money for any serious lessons - I had to work! And any extra time was spent with my horse (and his adopted pony buddy, Macaroni) and my dogs.
Not that I was a fabulous rider with far-reaching dreams, which I threw away - but owning an expensive horse (they all are) with mediocre athletic abilities stopped any chance I might have had.
If I had your ambition and dreams, I would pour all of my resources into riding, riding, riding, working in barns, attending seminars, and so on. Then, when you get a horse, (and I'm sure you will), it won't be one which will hold you back or one that you will swiftly outgrow, and then either sell or relegate to a "lawn ornament".
Just my 2 cents... and worth about as much!