Hi there Kogiopsis, and welcome to the forum! It's nice to see another friendly creative person, and someone with hopes of making an rp is always nice to see. ^^

As for where the best fit for your thread would be, it's a tricky question. The forum's designations for Casual and Advanced are mostly based on writing length, although quality can be a factor too. A lot of people, myself included, like to use the term "High Casual" for the type of rp you're interested in- short but quality posts that limit the size of each individual post becoming too long. If this is the type of posting you're interested in, as well as something a bit more frequent since Advanced posting can tend to run a bit slower, I'd recommend setting a game up within the Casual forum and designate in your interest check that it's 'High Casual'. Casual's also the section which attracts the most player attention, so you're likely to get more attention there too. I'd also recommend an interest check in the [url=http://www.roleplayerguild.com/forums/38]General Interest Checks[/url] section. The more awareness and advertising the better, right?

Best of luck, and if you need any more help don't hesitate to pm! Have fun!