To help fight the yeast, you need to go on a sugar free low carb diet. Get rid of the Mountain Dew. For caffeine drink coffee or tea without sugar. If you need to use sweetener then use stevia. Make sure the stevia isn't mixed with sugar, corn syrup, or sugar alcohols like sorbitol. Imo getting one filling removed a week doesn't make sense. I guess the right way to do it is to have one quadrant at a time worked on. If you need inlays, onlays, or crowns, it might require folow up visits(unless you find a dentist that uses Cerec). When an amalgam filling is removed, the blood mercury levels will rise temporarily, and it may take a month for them to get below the level they were previously. So a good strategy might be to have a quadrant done(I guess this is probably 2-5 fillings depending on how yours are distributed), then wait at least a month before having the next quadrant removed. Working on a quadrant at a time will minimize your exposure to novocaine.

As for chelation, use the Cutler protocol, starting with just DMSA, then later adding alpha lipoic acid(ALA).

http://onibasu.com/wiki/Cutler_protocol