Your preoperative physical should address whether the mitral valve prolapse (MVP) is an issue or not, and if it appears to be a concern, further evaluation and workup by a cardiologist can address these issues. In my experience, most patients with MVP are cleared for cosmetic surgery (though perioperative antibiotics are recommended, and are used anyway), and have no increased risks from this standpoint.
Of greater concern is the fact that you are having so much liposuction in addition to the "main events" of breast lift plus implants, and tummy tuck. Will your surgeon "rush" these "main" surgeries to allow completion of all of the other areas of smart-lipo? Just add up the areas: 2 hips, 2 thighs (only if one location on the thighs, could be lateral and medial which would be 4 areas), 2 arms, chin, and back = 8 (or more) separate operative sites, each requiring infiltration of fluid, laser treatment of the fatty tissue, aspiration of the liquefied fat, and a stitch or two. And of course, you want careful sculpting, not rush and go surgery! Say 15 minutes per site MINIMUM; that equals 2 hours or more, and leaves only 5-6 hours for a breast lift plus implants, and a full tummy tuck. Sure, it can be done, but either your surgeon will compromise (say staples for closure rather than "under-the-skin, hidden, dissolving" sutures, or "skipping" the muscle plication for the tummy tuck), or surgery that concentrates on speed rather than quality. And don't forget that your once your operation is over there is bandaging and compression garments for all of these areas. That adds to the anesthesia time, and unless you have an explicit agreement that your charges are completely prepaid, there may be an unwelcome surprise when you get a bill for the additional operating room, anesthesia, and anesthesia provider time!
And that's only the issue IF you don't have any kind of intra-operative or post-operative complication requiring hospital admission (even if it's just for "nausea," you get another bill!) and overnight stay.
Don't get me wrong, I do many combination procedures, some lasting as long as you have planned. I am just of the opinion that with the list of procedures you are contemplating, perhaps your surgeon is "cutting corners" or not being entirely forthcoming with the total anesthesia time (and possible additional costs). Consider another consultation with an experienced, board-certified (American Board of Plastic Surgery) plastic surgeon, or consider having your surgeon carefully outline the time-line and at least discuss a two-surgery approach! Best wishes!