In addition to the breastfeeding, i would also chat to medicos or others who have done it, so you minimise your injury risk. The relaxin hormone hangs around for awhile after birth, and going too hard too soon (or perhaps doing wrong exercises too soon) could put you at higher risk of injury.

There was discussion about exercise and breastfeeding recently in my ABA group, just trying to find the info to see if it is relevant to what you are looking for.