Is there a particular protocol for posting eg thoughts in italics? Would you like us to narrate our actions in first or third person, present or past tense? Just to make sure I've got it right! 
Normal writing is for normal stuff. Talking goes in speach marks ("....."). Out of character stuff goes in italics (like
can I attack the goblin now or do I need to sneak a little bit closer to get him in range?) but that's out of character game stuff. If you're posting out of character, in character stuff (Rogan remembers that he left the tent behind) then it's normal because it's part of what's actualy happens. Italics are for game rule/situational stuff that's not technicaly part of the story. I don't mind if people post stuff in past tense or present tense. I'd prefer third person when describing stuff your character does (feel free to use first person in italics mode as italics is the player speaking directly to the Gm out of character and normal text is the player describing their characters actuons, roleplaying and generaly having fun, I hope

).
If and when violence happens I'll open a separate battlethread for every encounter. In the battlethread there'll be a battlemap (which I shall update when it needs it) and I'll probably write the initiative order down the side of the battlemap.
I'll break people down into groups (based on side) so all the guys going first (before someone from the other side gets a go) may post their actions (but they'll still take place i initiative order), then the next group may post, and so on untill the end of the round (when a new round begins).
It all sounds confusing but it's actualy fairly relaxed. I'll also clarify it better with an explanatory post when battlethreads begin. Out of character stuff (declaration of intent, etc) goes in the battlethread. In character stuff (description of the fight) takes place in the story thread and I'll generaly update that at the end of every round, or at the end of each initiative group's actions (whichever works better drammaticaly).
It's nowhere near as complicated as it sounds.