Not quite sure what you're asking, so I'll just give general help.
If you need help with the scripting and coding, than I'd suggest heading to the Programming Help sub-forum. You can do this by clicking on 'Community', and scrolling down to the bottom of the page.
If you want to know if AG will host your game, you should probaly contact them. You can do this by scrolling up, and clicking the tab on the top right that says 'Contact'.
If you're wondering if your game will be popular, than just post up a teaser link on your about, or post up a link in the Programming Help. This way, you can get feedback on coding, bugs, and enjoyablility.
I do have what I need for coding. RPG Toolkit has a huge community. What I need to ask though, is that this game will take a while to beat, approximately 20 hours. This is not a hack-and-slash RPG, it has a story and character development.
As for the teaser link, I'll have to get the game running first.
The bigger deal is that the game is fun, has decent graphics, etc. There are several games on this site that take a long time to play through, and yet they are still popular.
So really its the quality that matters, not so much the legnth.
Well, I contacted the site about 25 minutes ago. And I am creating the game from scratch - the graphics (I am a horrible pixel artist, but I will get better), the music, and the plotlines. If it becomes popular, I will include the other installments of the game.
As soon as I get a demo up, I will post a link to it.
One problem though, RPG toolkit is not working. I tried loading my tileset into the program, but the tiles were messed up. Until I figure out how to use the new editor I just downloaded, I'm going to hold off on this game.
It's vague on what criteria ArmorGames checks to determine if a game will be officially submitted or not (at least to me), but I just think they check to make sure the game actually runs, works, does not contain any micro-transaction systems (the part you're supposed to agree upon by checking that little box on the bottom), and is appropriate for the site.
Looking forward to your game by the way! There aren't too many adventure games in AG with these kind of RPG elements. I hope that editor of yours comes through for you!