Let me throw in a monkey wrench.
Do you want to shoot it in competition, such as Bullseye Pistol?
Do you want to use optics?
If you want to shoot a precision sport with your pistol, you won't be competitive with irons. And then you will want to add optics.
Smith and Wesson has a cut off for drilling and tapping their pistols.
S&W would not drill and tap this 1968 M46, said they don't have the parts to fix if something was broke.
I found a local bud who would. Clark Custom Guns in Princeton LA will drill and tap. They work on M41's.
S&W(R) Model 41 | Clark Custom Guns.
I would estimate drilling, tapping, FFL fees will add $150 to $200. So keep that in mind.
If you do buy an early M41, replace the recoil spring and the mainspring. S&W is always out of mainsprings, I found new "oem" from ebay vendors. Avoid Numrich, their mainsprings were not worth the money. I doubt they were ever OEM. A weak mainspring affects slide timing as the slide has to push the hammer down, the recoil spring is also hugely important for timing. Any 60 year old spring needs to be replaced.
do not purchase a high mileage M41. Older M41's are made of softer steels than recent. That creates issues for the firing pin block, the slide, etc.