Re: Polypectomy and Septoplasty Surgery Concerns
There's really no easy answer to your question but here are a couple of thoughts:
First of all, has your doctor attempted to treat the polyps medically before jumping to surgery? It's possible to treat polyps with a course of oral prednisone and steroid nasal spray if the polyps aren't too severe. It seems like some ENTs just want to operate no matter what, and polyps have a tendency to recur if the underlying cause (often allergies) aren't treated.
As for whether you should have the deviated septum surgery, I would say "no" unless you get a second opinion from an ENT who recommends it. The polypectomy isn't a lot of fun but it's relatively minor surgery that involves removing inflamed tissue. The deviated septum surgery is MUCH more invasive and involves removing bone and cartilage and is definitely a tougher recovery.
If you needed the more invasive procedure it might make sense to have a minor procedure at the same time, but it doesn't seem to make sense to have the deviated septum surgery at all if the doctor wouldn't normally bother (it's kind of like taking your car in for a minor brake job and having a mechanic say "since you came in for a brake job why don't I go ahead an replace the transmission at the same time".
That's just my 2 cents, but as someone who has had 5 different sinus surgeries, I would never recommend having something as invasive as septoplasty done unless it's absolutely necessary.