I have tried a bunch of combinations on these pistols, and my suggested recipe, although not cheap, produces a great 2 to 2-1/4 pound pull with .100" or slightly less total travel.
It is only 3 parts. A Clark Custom pin & hammer bushing kit. For a 22/45 it is CLK517. These are oversized and reduce creep in the trigger.
Volquartsen sear to reduce pull weight and clean it up, and the Volquartsen trigger to provide the ability to reduce pre-travel and eliminate over-travel.
EDIT: Here is a post I made on another board with more detail:
The VQ hammer bushing eliminates the mag disconnect. The Clark one is oversized and eliminates some creep. Creep is the play in the trigger once the pretravel is taken up, but before the sear breaks.
The VQ sear reduces trigger pull.
The trigger has pretravel and overtravel adjustments. The Ruger trigger action is single action, 2 stage. This means there is a lighter first stage, then the trigger breaks with additional pull. A little pretravel is needed for the action to reset. I like to minimize it for the shortest possible trigger stroke.
Overtravel is movement of the trigger after the sear breaks. The only real downside is a longer movement to reset the action.
With those 3 parts the trigger pull comes in around 2# 4 oz, very crisp, and under .100" travel (typically .090" total stroke).
The Volquartsen hammer reduces lock time. The amount of time between the sear breaking and the bullet firing (think flint lock delay). I cannot detect a benefit, and while I have one or two guns with one in it, won't buy another.
The Volquartsen titanium disconnector is a couple ounces lighter than the steel Ruger part, but no one, my self included, has been able to detect a measurable difference with a trigger scale. Only reason to buy would be to replace a damaged OEM.