I love my Kimber TLE II in .45 ACP. Its got night sights, and is in 4" Commander style configuration. It came with rubber grips, and front checkering pattern on the front grip strap. No accessory rail. You could always opt for Crimson Trace laser grips too. I have a pair of Hogue grips that I switch on my Springfield Armory 1911 and Kimber. But for the time being, I have a pair of oak stained grips I made and put on my Kimber.
If you're looking for a hi-cap 1911 style pistol, Para Ordnance makes some, and even in double action. I think Springfield Armory has a hi-cap model too. There are plenty of other hi-cap .45s out there, but if you're looking 1911, I'll stop there. The Kimber mag that came with mine works great. I bought some Chip McCormick 8 rd mags, and have had no problems with any of them.
As far as a light rail, I guess you'd have to consider what kind of carry rig you'd need, and if it can be drawn quickly. I don't know because I don't care for the accessory rail. IMO, it just gets in my way so I don't own any guns with one. I had a Taurus PT92, and it had a rail on it. Wouldn't fit in any of the military 1911 holsters I had that I would carry it in sometimes. But keep us posted on what you do!
With Oak grips
With stock rubber panel grips