10 year visa

I am Canadian and I have about 9.5 years of passport validity remaining. Could I get the Chinese visa until my passport expires?
Should I put for 10 years when I am applying? and will it automatically apply till my passport expires?
Shall I just provide my hotel and flight ticket details for the first entry only? Or Do I have to have family or friend who can send me an invitation letter? I don't know anyone in China. I just want to travel and visit on and on.