I am planning on backpacking through south east asia for 2 months. The plan is to travel light and have high mobility. The choice is between a Spotmatic with 55/1.8 and Electro 35 GSN with 45/1.7 for this trip. I would really like to take some photos indoor hence the fast lens. Since they are the similar size and weight I really couldn't decide. I would also bring a Rollei 35 for to keep me happy if the fast camera is lost or broken. Any suggestions which one are better for a long trip?