Right, now here are a few guidelines for IC. No posting order in general, but no double posting. Minimum of 1 paragraph per post unless your character is talking with someone else's. Also be reasonable with post length, 6-7 paragraphs max is generally enough to convey anything you need to say, though exceptions apply for combat and exposition. 

Now, at the moment you have two choices, you can continue to banter and get some characterization in, or you can call it a night. Main story will continue the following day in game.