I am have been working with unity for a couple of months, mostly hobby stuff. I am currently working on a RPG System for Unity3D, so I do have experience in that area aswell.
I set the limit as 30 days since I can't estimate how much you have left to do, and in game dev, things never go as we like, so that time can be less/more depending on what you have in store for me.
If you want further information, PM me, and I will get back and answer all your questions.