I am relatively new, but my take is:
1.) If you are carbing them with corn sugar, I would leave at room temperature for 2 weeks to allow the natural carbonation to take place
2.) For an IPA, I would then store them in the coldest location possible since IPAs don't age well. The colder you keep the beer, the less it "ages". You want to protect that hop profile.
"You canít be a real country unless you have a beer and an airline Ė it helps if you have some kind of football team, or some nuclear weapons but at the very least you need a beer"
- Frank Zappa