>>95866989
both are cool. I have to agree with other posters that the 17th century is more interesting just because of how diverse it is. You can get away with a lot. It also historically was an era of almost unending global conflict so there's no shortage of action.
Napoleonic era has its pros too. It's very colorful and dramatic. If you want to focus on big conflicts between empires and ideas it's certainly a very good option.