[quote=@fourtimesnine]
Hi there! 

This sounds like a really cool premise. I might be interested in joining, but before I start writing the CS, I'd like to ask: How long should posts be? How often should we post? I'm still fairly new to RPing, and this would be the first "Casual" level RP I've joined, so I want to make sure that I can keep up. Thank you!
[/quote]

I don't know any complete specifics. But in casual, they usually expect a paragraph or two for each post. How often a person posts usually depends on the pace of the RP, so once it starts, it can go from any length. However, usually, in casual, you post every two or so days.