Husband is a general dentist who does Lumineers and braces, as well as all the other restorations, including crowns after our favorite periodontist completes the implants we refer to him. Just asked him this question, he said you would need your case evaluated looking at your periodontal (root, bone and gum) health, then to evaluate your general dental health. Braces could involve extractions. Braces are almost always cosmetic, as are Lumineers. Lumineers are completely reversible, braces are not.
If you're talking about discolored front teeth from Tetracycline staining, Lumineers would be the way to go. There are other veneers used as well.
I would suggest getting several consultations and taking your x-rays with you once you get a complete set taken. Full Mouth are good for 5 years, barring accidents. Bitewings are not good past two years. A Panorex is good for 5 years unless you're going for surgical extractions, then they might want a brand new one. Remember, once you pay for your x-rays, they are yours.
Care Credit is a health care credit card that many offices offer now to pay for extensive work. Make sure ALL the offices you go to work TOGETHER to make sure you don't "max out" your dental benefits for the year and have out-of-pocket costs past what you can afford.