Re:Question about drawing and discarding cards....
Do explicitly what the rules say to do, when they say to do it (you're thinking to much ).
So, at the beginning of your turn always draw two cards regardless of anything (other than your character's special power). At the end of your turn, always discard down to your life total... and don't think about it at any other time. After all, with General Stores and some character powers (Bart Cassidy and El Gringo) it's possible to have more cards than you can *ever* have life at the start of your turn.