My question is:
Im on 9 different meds and I want to know what will happen, if anything, I stop taken them all at once?
1. Spiriva
2. Advair
3. Ventolin
4. Pristiq
5. Seroquel
6. Chantix
7. Lovaza
8. Xanax
9. Percocet

Never stop a drug suddenly without an OK from your doctor. If you go to another doctor who says so and monitors you, that's different. Some of those drugs aren't even going to be easy to taper down, much less go cold turkey.
Talk to your doctor about reducing dosages and possibly discontinuing some of them.
Percocet is a good one to talk about reducing/adjusting as needed, so that you don't become tolerant and addicted.