Um, have you finished any project with construct or what.. Because you know, though the idea is fun, group project is actually tons harder than one man project. Without proper management, the conflicts that you will encounter would really be demotivating and will slow down the process.. Things like how you commuinicate(time zones), unity in one idea, consistency and making sure everyone does his job etc.. and most importantly, motivation, and by the way you introduce us your project hiring people, no one will be motivated to work with it..
And also, to be frank, the background of the story smells of generic cliche rpg, not bad butnot really that awesome.
All i'm trying to say is, work for your project as a one man job. Look for help in the forums or request sprites, or resources, code snippets,etc.. and put due credit. It's like wroking on it with several people but you save yourself the trouble of managing a 'team' who is supposed to be dedicated to the project .