THats a great pistol ya go there. Just a couple thoughts to follow, fwiw....

So far my plans are...
beavertail safety, most likely a S&A - S&A .220" is the only option for Springfield tangs.
commander hammer - you should replace sear, disconector, and the hammer at once. Upgrading the hammer but leaving MIM sear and disco is kinda like running bald tires on 3 corners then a new tire on the 4th corner, in the rain.
stainless 4" barrel - unless your building a bullseye gun, the stock bbl is combat accurate (as you mentioned above), to me the stock is plenty good. could save you 225$+ to go towards other goodies.
vz grips in black desert sand operators 2 - awesome
bobtail (bc it prints pretty badly.) most likely ed brown - edbrown works, check the long 1911 thread in here for a recent bobtail i did using the ed brown parts.

and either a Black and desert tan or Black and grey color coat of some kind havent decided yet. - cerakote is the way to go



Since the 1911 is a collection of subsystems and NO part can be replaced without effecting at least one subsystem, then its very important to come up with a plan of attack that keeps you from having to toss new parts in the future. Also, add a trigger to your list, fit trigger when you do the rest of the fire control and before the beavertail.