I am a fan of keeping the street facing window treatments cohesive. It is such a large window, I think it will stick out like a sore thumb if you go the cheap route. Try to choose at least the same color for all windows. I know that garages get dusty, so you don't want to hang treatments that are too expensive.

Has anyone had experience with using privacy film on windows like this? Another option im looking into

Window film on a garage window is a great option to give you privacy with very little to no change in street appearance. Also the easy to clean vs. a blind or shade. Visit www.decorativefilm.com to look at some options or contact a professional near you. Something frosted, opaque or one of the SimGlass films would be my recommendation for that garage, then look at solar control film to protect from fading and enhance your energy efficiency for the rest of the home. Visit www.vista-films.com to learn more. Good luck!