Sometimes it is possible to place implants into sites infected by a root so long as the bone socket is cleaned thoroughly. However, it all depends on the infection, tooth in question and how things present on a 3D CAT scan image. See your local periodontist, oral surgeon and prosthodontist to...
The changes you mention would not be caused by removing wisdom teeth. Are these the only back molars you had? If so, maybe your face could be more sunken in,etc and implants could be done to help that but these would be in the more forward molar positions. not the wisdom teeth.
Congrats on your upcoming wedding. The best option for a fast, inexpensive solution is to find a dentist that can make you a plastic partial denture. This will be a temporary solution to close the space and get you through your wedding day, but not the best option long term....