You may have gotten this advice already, but it's an idea to just get the gun home, inspect it after a field strip, then take it to the range and see how it shoots for you. 1911s are very configurable for hand size with two different grip thicknesses, and various trigger shoe sizes that can be tailored to the user.
I have M/L hands (7.25" from thumb base to tip of middle finger) and find that thin grips and a Short trigger suit me well, but it depends on your particular hand sizes, obviously.
Good luck!