Time....don't even get me started on time.....I work 42.5 houtrs/week, go to school 3 nights/week (13 hours), and I'm still supposed to have time for homework and a fiancee....
Been there and done that bro few years back. Pretty much identical schedule, aside from gf at the time and not fiance, but yeah...you got alot on you and times are hard at that stage.