If you just straighten your teeth, you don't have to go to the hospital. You also said you had time. Correcting teeth means that you can correct them when you have time.
You can ask friends who wear braces where they are sitting and then look at their teeth. You can also go if you think the effect is good.
I just sit on my teeth. In fact, you can find some dental clinics that look good. For example, there is a clinic in Chaoyang Bridge, and it is nice to walk 500 meters north of Chaoyang Bridge. You can consult.