Are quick-correct braces a good option?

I have overcrowded teeth, and a severe overbite. Although I don't think my teeth are severely overcrowded, but I am no dentist or orthodontist, so I am not sure on what severe overcrowding is. I grew up in a poorer family so I couldn't afford braces even though I badly need them. I now have a job and I'm saving up to get braces but it will be in my adulthood so I was wondering if quick correct braces would be okay as I don't really want to wear braces as an adult IF and only if I don't have to.

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