Also thinking about better trigger (less take up), beaver tail… where would you spend a little $ to improve this pistol?
IMO, best bang for your buck is to figure out very specifically what you want and get a quote from a qualified gunsmith.
Trigger take up - As others have said, many companies make triggers with pretravel ears. You will have to fit the trigger. You will need a couple files and stones/sandpaper on a flat surface. Also, just order the trigger stirrup die now. I find they often are needed as trigger bows often get bent somewhere between manufacture and install.
As an aside, I find some take up to be a good safety mechanism and bent my eared trigger nearly flat again.
Trigger - In general, I find what most people are looking for in a trigger is reduced creep and 3.5-5.5 lb pull weight with 0.018” hammer hooks and about 0.010”-0.013(if I remember right) engagement with hardened parts. You will generally need a trigger, sear, disconnector, hammer, strut, mainspring, safety, just in parts. In tools, you will need a sear jig, stones to clean up the frame maybe, layout fluid/marksalot, files, kuhnhausen books, etc.
Beavertail- similar....it will be cheaper and more likely done correctly the first time.
On the cheap, I would use a round hammer and commander type grip safety.
On the cheap with the trigger, I would get a trigger pull gauge, sear spring, and new 23lb mainspring. Your other parts are likely good enough to get you moderate creep at about 4.5-5.5 lbs. I have a stock Colt with a decent, not great 4.5lb trigger....I might have tweaked the sear spring....I forget.