I like to write long posts myself, but I think its hard at the moment because of the stage of the RP. How much can one write about an inn meeting after all? I can imagine everyone's posts getting progressively longer as things move on. 

As for posting order, there isn't one. I find them too restricting for the most part. Post when it feels most right to do so. Also whilst I am an avid fan of collabs, I have no quarrel if people feel the need to converse on a post-by-post basis - especially when everyone's in a big group.