Working out Prior to BBL

Hello, I am schedule to undergo my BBL in mid-December and I am also an avid gym rat who works out 5-6 days per week.  My workouts consist of 40 minutes of cardio followed by 1 hour of weight lifting.  I am 5 3," 155 lbs and my measurements are 38-28-39.  As you can tell from my measurements, I have a good amount of size back there.  However, I would like to round it out more and add just a little bit more volume.  My PS informed me that because I do not have a lot of fat, he would only be able to put 450 cc in each cheek.  Because of this, i'm curious as to whether it would be worth it or should I just get lipo which will also give me the appearance of more volume once he lipos my mid section.  Does anyone have any recommendations regarding my situation?  Also, should I continue to do my daily workouts, particularly squats and lunges, or should I stop and try to put on more weight?  I'm thinking the squats and lunges will ultimately assist in my overall goal of adding more volume.   Thanks