Ugh. Not sure this is terribly advisable unless you know you can do OLCI. (SkyClub in ATL, since it appears you're ST E+ and flying ST over the water?) SV uses Terminal 2. I've only flown internationally out of there, but the check-in counter will be excruciatingly slow. That's a for sure situation. You'll also have to get through immigration and customs upon arriving at RUH, right? Not sure how you get all that done in 90 minutes with changing terminals.