Empty nose syndrome is a somewhat controversial topic in terms of the true cause. Generally speaking it is associated with aggressive resection of the inferior turbinate. It is common to have the turbinate partially resected in combination with the outfracture though your presentation seems less likely to be true empty nose syndrome. Saline spray/rinse and occasionally a short prescription of antibiotic ointment (e.g., mupirocin) may be helpful. Ultimately, your surgeon may be inclined to obtain a culture or imaging to ensure no other problems.
Dorsal hump (bump on bridge) reduction is a very common concern in rhinoplasty. The answer to your inquiry regarding final appearance will depend in part on the approach undertaken by your surgeon. Among the more common general approaches for rhinoplasty are- nondelivery, delivery, and open. Of note, a droopy columella is often attributed to poor tip support. Depending on the approach, the major tip support may be altered/reduced. Additionally, addressing a dorsal hump can sometime require other grafts if there is concomitant narrowing of the nasal valve. If the nasal valve is too narrow, one can have difficulty breathing even after the procedure. Lastly, everyone heals differently, and edema (swelling) is not uncommon for many weeks after the procedure. To maximize your chances for optimum results, it is important that your surgeon is board certified and understands both the cosmetic AND functional aspects of rhinoplasty. Best of luck with your procedure!