I don't know, my thought is for nice casual game a 10 day break (or whatever) should be fine, no big deal.  The idea of having a set hosting schedule is to keep the game moving along at a reasonable pace whenever there is not a reason not to, but we can be pretty flexible as long as we're not just wondering if we're ever gonna hear back from somebody.    FWIW, I second the suggestion for a 3 day max turn window without an excuse/reason.  I'd also suggest that everbody try to take their turns as fast as they comfortably can whenever they don't have a reason not to...which is to say it'd be nice if some turns took less than 3 days. 
