LOL you know what I mean 
didn’t mean to troll :). There are concepts you need to understand sure but getting it to run is quite small.
I don’t think so (JShint). To me, you’ll likely find some great UX people out there who know their JS and want to help. The main questions here are:
Do they know Ember?
Do they use CoffeeScript (and/or like it)
Frankly I don’t know the odds here but I’ll guess not many will know Ember but even more important (to me) is how many are willing to learn it, and your code?.
Of those… how many embrace and love CoffeeScript?
So many questions!