Confusion About: Weight Loss Goals & Umbilical Hernia & Postpartum Skin AND Boobs?

Painful umbilical hernias, post-partum or not, should be repaired as soon as convenient. Weight loss will not correct the issue, and the hernia can potentially become a real health problem.
If the optimal weight range for cosmetic surgery has been reached, then the hernia can be corrected at the same time as other combined procedures, and it can be a natural part of a tummy tuck in a mommy makeover.
If the size of post-partum breast is limiting physical activity, there are options with minimal scarring that can reduce breast size temporarily until final weight is achieved and stabilized. It is best not to address breast shape if a significant weight loss is planned, as the final outcome will be affected by the weight change.

Your problem areas are quite common and are well within what most plastic surgeons do.  Many PS are also board certified in plastic surgery and as such can repair the umbilical hernia at the time of a tummy tuck.  You should continue your weight loss as aggressively as possible.  As you lose weight your breasts will likely shrink and you will have a have more loose abdominal skin.  In general, I prefer that patients be within 20-25# of their desired weight prior to surgery.  As you approach this you should make an appointment to see a board certified plastic surgeon in your area.

Good luck