I'm Andres Clari from SteelCode Consulting, and I have ample experience building complex RubyOnRails sites and dynamic Javascript frontends, for more than 5 years.
So I feel I can help you with anything you need for this project.
I'm a nitpick for code organization and tidiness, so I can make sure you're left with a well organized and trimmed version of the code you currently have.
Also if you're not currently using minified code I'll make sure to set you up with the means to create minified and compressed code to run on production.
Probably we'll need a list of the functionality that has to work, so that the non used parts can be removed safely, or at least have a conversation about it.
I would love to hear more of your project.
Let me know if you want to work together on this.
Regards, Andres.