Thank you for your questions.
Unfortunately with out photos, a review of your past/current medical history and a exam of your tissues and nose, I can can only make general responses based your story, however I hope you find my comments helpful
MULTIPLE PROCEDURES
Only after a complete review of your medical history and a complete exam can the final decision be made on how many procedures can be performed in one setting.
Assuming no major health issues a Brazilian Buttock Lift (BBL) and other procedures are often completed at one surgical setting . From a technical and recovery point of view there is no reason that both can’t be performed together.
ANESTHESIA
Like wise the length of anesthesia should not be a problem. Anesthesia if performed by a Board Certified Anesthesiologist in a fully accredited Outpatient Surgical Center is very safe and analogous to flying a airplane: the take off and landing (going to sleep and waking up) is the most critical times not the duration of the flight (length of anesthesia)
RECOVERY
Hopefully, you will be meeting with your Plastic Surgeon prior to your surgery to go over all the pre and post operative instructions and to answer all your questions.
I suggest you make a written list of your questions.
BBL:
In general, most patients have recovered in the 2 week period of time.
I allow my patients to sit on their buttock areas when their is no longer any pain.
I suggest you purchase a BBL pillow type pillow to place the majority of your weight on your thighs while sitting.
Gentle postoperative massage of the harvest areas is recommended. Purchase a hand held massager and massage oil and use as tolerated as the post operative pain remits for the first several months.
I also recommend Vellashape III (radio frequency) to help shrink the skin over the fat harvest areas.
RHINOPLASTY
Is straight forward and usually a easier recovery than the BBL recovery. Depending on if internal correction of deviated septum is necessary the recovery is often less painful and easier to deal with than the BBL.
I recommend you make a list of your questions and schedule several consultative appointments with Plastic Surgeons who are Certified by the American Board of Plastic Surgery and ideally members of the American Society for Aesthetic Plastic Surgery (denoting by membership as having met additional criteria and a focus on Cosmetic Plastic Surgery).