Without the benefit of examining you, I cannot tell you what sequence of treatment you should follow. It may very well be that your wisdom teeth are forcing your other teeth together. Here is something else to think about --A lot of adults that do not want to undergo braces have opted for veneers, which give the appearance of perfectly straight teeth and what some call, "instant orthodontics." This is just one option that you may want to discuss with an accredited cosmetic dentist to see if it is a viable alternative for you. If you have unanswered questions, ask your current dentist or seek a second opinion from a qualified dentist that can examine you.