Write some letters to other Lords and so on (eg to the Tyrells, to the Crakehalls- no doubt the Baratheons have heard the news too)- that was one thing your post was missing a tad, it allows for arrangements to be made to meet, or generally shit to go down, though due to ravens being shoot-able, it's not always the most advisable thing to put really, really critical information into there. Like how many troops exactly, or very specific nefarious details that involve you. At worst case scenario and when you know it's highly likely, and can afford to have it comprimised, Ravenmail is good.