Although I have been DMing on and off since I was about 14, this will be my first time running Pathfinder. The group I currently play with was set up a couple of years, and I kicked off as first DM, running a campaign in my own world using AD&D second edition rules. I want to develop my world with Pathfinder rules, but not dive straight into it without some experience running the rules. I particularly like the Darkmoor/Blackmoor setting in D&D, along with the follow up in Glantri, so Iron Gods was my choice.
I’m still prepping for it, and need some more resource books before I’m ready to run, but am slowly accumulating them.