That's alright. I try not to have all my eggs in one basket RP story wise, so I'm not terribly impatient. If a week goes by with no reply I might email a gentle poke, and see what's going on, but that's all. I work in a hotel in Florida, so we get waves of business where I feel tired and less inspired too.
I'm hopeful that you have a start in mind on the Firefly thing, and any time you want to set up a thread and link me that would be great! Assuming that's how you prefer it? I'm a bit of an Elliquiy, forum rp newbie, and you'd be my first one on one.