Yeah, since finding tin can be hard, I would just go with iron, though making stuff out of iron means making something that I forget, but starts with a K, that can heat up the iron enough to melt it and make stuff out of it.
While you did remove the leadership stuff from his skills, you did not remove it from his personality section, so remove the natural leader part.
For the background. Split it up so it is not just one giant wall of text.
One last thing I forgot to say, but it is not a negative thing. You need to say where in Japan your character is starting. More so to see how close or how far you are from Crusader Lord's character. So just say where he lands in Japan if you stay there.