I could use a co-op partner for an Elite run. I live in the US Pacific timezone and work nights so early in the morning or afternoon would be best. Please send me a message on XBL if you're interested. I'll send a message to the last 2 people who posted to see if they want to play as well.
I'm also up for joining a squad and working on any MP achievements. The DLC will be on sale next week so I'll probably pick it up then.