In my uneducated opinion, and I am a total noob, if your granny gear isn't low enough to get you up a hill, get off and walk. What would you do when overtaken by a faster rider? Looks like a crash waiting to happen. I'm a fat old man and I could easily strip a gear if I didn't know when to get off and walk it.

Oh, and welcome to bikeforums by the way Hope to see many posts from you Baville