Gold Cup Trophy 1911's are nice, but in my opinion, you do not need sharp edged and adjustable sights on a defensive pistol. For a Colt 1911 for defensive use, fixed sights and either Government Model or Commander sizes. Keep it simple, keep it rugged, keep it reliable.

For ammo, keep the operating pressure at normal, no need for +P ammo, and the keep the bullet weight at 230 grains as that is the standard sight regulation for most 45 ACP pistols.

Use high quality magazines like genuine Colt, MecGar, or Checkmate. 7-round standard, flush fit mags. 8 rounds only if the magazine has an extended body. 8-round flush fit mags sometimes work, are very hard to seat when fully loaded, and may cause a feed jam on the last round. Yeah, ask me how I know.

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VCDL, GOA, NRA