I prefer a crisp 3-3.5 lb 1911 trigger. Some of the competition guys get down around 2 lb but that's a bit light for my uses.
That's great for a bullseye gun, but not a gun intended for defensive use. Hair triggers can be a problem in that context.
In Bullseye competition with the NRA, centerfire 1911 pistols must pick up 3.5 lbs. In competition with CMP, it must pick up 4 lbs.
You can probably adjust the pull weight yourself and it is unlikely you will need to start replacing parts. Your sear spring has three fingers. The finger on the far left controls trigger pull weight. If you bend it forward, toward the muzzle, pull weight will increase and of course, if you bend it back, it will decrease pull weight. In the bending process, bend it at its root, where it branchs off the main body of the spring. It is a trial and error process. Bend it, put your pistol back together and test the weight over and over until you get it where you want it.
Most will recommend you go no lower than about 4 lbs for general shooting.
Phil
