All a 1911 really needs is a decent set of sights (I like trijicon),a basic tune up (to insure the extractor tension is correct,plunger tube checked,basic action work,Videki trigger,polishing),and a couple cases of 230g hardball.
As far as mags go,Colt,Wilson,metal form are all good,in 7 round configuration. The springs are too weak in the 8 rounders,and will affect reliability sooner or later.
As for all the extras,up swept grip safeties,guide rods,x-power springs,ext slide stops and safety locks, save all that money for ammo and range fees.