Since the submission process is still in beta, I would go ahead and submit your game now. You can get a lot of eyes to view your game and give great feedback, and you can take down your game and submit a newer version if you'd like. Once the creators club goes out of beta it's made for final releases, but I see no harm and having your game uploaded in its current state. Heck you could tag "Beta" to the title if you wanted and include a link or email address to send feedback to.
I know you said you don't have a CC membership, but you could get a friend to submit it for you. Even if it doesn't make it through the process, you still get free bug testing :-)