Hello and Great Question. I appreciate the time you are spending researching this procedure. My name is Dr. Matthew J. Nykiel. I am a Board Certified Plastic Surgeon, a Fellowship Trained Cosmetic Surgeon, and a Butt Augmentation Specialist. Yes! That is completely reasonable. I would recommend using a more long lasting filler than hyaluronic acid. You want to wait until ALL of the swelling has gone down before putting in the filler. Usually that is at least 6 weeks to 3 months. I hope that helps! Best of Luck! Matthew J. Nykiel, MD#TopREALSELFDoctor#CoreREALSELFDoctorButt Augmentation SpecialistLiposuction SpecialistBoard Certified Plastic Surgeon