Red flag! It's a nonstarter to extract oxygen from water, use it to burn a hydrocarbon, then try to come out with more useful energy than you started with. This might have some use as an energy storage scheme, as storing hydrocarbons can be cheaper and more energy dense than storing hydrogen.

The weak gravity—similar to the Moon’s—combined with the thick atmosphere would allow individuals to aviate with wings on their backs. If the wings fall off, no worry, landing will be easy. Terminal velocity on Titan is a tenth that found on the Earth.

A 12 mph collision with solid rock or packed dirt is survivable, given the proper technique or circumstances. It's also still potentially fatal.