Its not a question if you will have an AD- the only question is when and where-- if you have been trained correctly it will be in a safe direction and no one will be hurt.
Going from condition 1 - to condition 3 - and back again is pretty normal in the real carry of a 1911- jeez I know guys who carry in condition 4.
Kimber's with the II in the name aren't as good as the original.
Colt doesn't make their guns, in a factory like they used to, the ones made today are far better guns, but because it says Colt doesn't make it a better gun.
Most firing pin blocks will stop a discharge in the hammer down drop test, but the trigger pull is off, sometimes the hammer fall energy will used in moving the blocker that last little bit to clear the firing pin. Some like the S&W move the block with the grip safety instead of the trigger, better approach.
If you want a top-flight gun, buy the parts, Bar-Sto barrels, STI triggers, titanium sear groups, choose your frame, and slide and have it measured for specifications. Take it to a good smith etc. Why not? your willing to do it for a rifle.