Does it matter what Coding language I use on the game I'm working on?

Nope! In the end, C#, UnityScript (i.e. JS), and Boo (i.e. Python) all compile to the same thing - that’s the beauty of Mono/.NET. So it doesn’t matter which language you program in; it’s all up to personal preference. If you’re curious, check out the forums, where there are often heated discussions of which language is ‘best.’