I carry a full-sized Sig P220 Legion SAO .45 every day, with big fat sights, comparable in size and weight your milspec 1911. The weight does not bother me after 4 decades of carrying a full-sized revolver or pistol for duty. Chances are I will never need it for personal combat, but if I do, I want a pistol that will get the job done. From time to time an uninitiated person at the range will point out to me that my hammer is cocked. "Yes, it is", I will say, as I go about my business.
As far as magazine capacity, I am happy with 7+1 or 8+1 plus reloads. As Jeff Cooper once said on the subject of magazine capacity, "How often do you intend to miss?" Magazine capacity is no substitute for marksmanship. And the physics of those fat bullets is undeniable.
I have a Colt Commander and a Gold Cup, and a SA 1911 Professional is my Grail carry gun. I would probably carry the Commander except for the sights. My only complaint about the older stock 1911's is that the sights are too small for my old eyes, but that can be changed.