The key issue is making sure that you are safe under anesthesia for the length of time required to complete the procedure. In general, the procedures that you mention, Tummy Tuck, Breast Reduction and Outer Thigh Liposuction can be completed in less than six hours. If you are young and healthy, you should do okay. However, like all patients undergoing surgery, you will need medical clearance to make sure you are an appropriate candidate for surgery. Also, you don't want your surgeon to feel rushed to try in fit many procedures into a short time. If you are a large person, it may take longer to perform the procedure. If you are a small person with just some loose skin in the belly and a little fat on your thighs, then it may be more reasonable. Good luck with your procedure.