I have a 5-inch Kimber that I carry. As long as you get a quality (design as well as construction) holster AND quality belt, carrying a full-size seems okay to me – I’m 6-ft and average build. I will admit that it is more noticeable (to me, not the general public) than a compact as far as size and weight goes, and a full-size can get UNcomfortable once you climb in the car and fasten the seatbelt. If you want a smaller, lighter rig, I recommend you pass on the 1911 and get a compact Ruger, XD or Glock.
IF you have a friend with a .45 and a decent holster, IF that friend is willing to loan it to you for a week, and IF you don't live in a screwy state that considers such a loan a "transfer," then I recommend you try it out for a few days before going all in. (Hey, you might want a full-size 1911 even if you don't carry it every day, but why buy the concealment holster if you decide the whole thing is too heavy or too bulky...or in the case of a compact .45, too uncomfortable to shoot.)