Your date of hire will be the 21st yes...Don't live in your crash pad..that's not what they're for...you'll end up annoying your crash pad mates who use it when they NEED a place to stay. It's gonna be a tough road man, with a two legger commute from the west coast..that's about as hard as it gets...but there are people who commute from Hawaii, and i know a flight attendant that commutes from South America, so it can be done.
It might be best for you, if you can afford it..to move...you will never be home if you stay in cali (especially since you live at satellite airports), you're going to spend most of your days off commuting, since your commute is a FULL day with multiple legs.
Good luck.