If you are fairly young and healthy overall, it is probably safe

The safety of any surgery depends on many factors, including but not limited to, your general level of health, your weight, the procedures performed and the skill of the surgeons and anesthesiologists etc. Generally, a well-trained meticulous surgeon can safely perform the liposuction and breast reduction provided you do not smoke, have no additional risk factors or family history of blood clots,  you are not morbidly obeses and are generally healthy. If you  are a smoker or extremely heavy, then I would consider dividing your surgery into two surgeries. Otherwise you should be fine having the surgery.