[Q] Back to factory settings

I never liked cellphones and avoided them for years until I got a Galaxy Note as a gift. I gave it a try but after a year of minimum use I can safely say that it doesn't appeal to me.

So I want to sell it, but the problem is in my attempt to like it I rooted it and it seems like resetting to factory settings with a root may cause on a brick, so I'm wondering, what would be the exact procedure I have to follow in order to get it to be as it was on day 1?

Model: GT-N7000
Android version: 4.0.4
Root: SuperSU

I mention SuperSU because it seems like it has an unroot option on It's menu. Do I just use that and then search for the factory reset option and I'm done?

Thank you for reading.