It's a little difficult to say really. It reads well and appears to be complicated enough for the size of the game, but not to complicated so as to take away the enjoyment. Obviously without anything more than what is a 'statement' of what you intend to offer through the rules, it would be difficult to judge whether they are good or not. Often the finer points of the game's mechanics don't become apparent until you actually pick up the rules and play them. There is then either, an 'Eureka' moment, or you vow never to play them again.
I personally don't see any problem with a single set of rules for all periods, but some people do, so that might put some people off. Most rule writers quietly write their rules, play them exhaustively, iron out the bugs and get them right before offering them up. By offering parts of the rules as you write them, you run the risk of accepting input which may result in a set of rules created by committee, which never works out well.
Other than that the ideas sound okay and if the finished product works as you intend, it should give people a challenging couple of hours play, which is all people generally want.