I agree with the other guys, I’d shoot it for a while first, then decide what you want to do. Some manufacturers don’t like to do warranty work on pistols that have been worked on by someone else.
A couple of features I have on my favorite 1911s:
Relieve under trigger guard for a high thumb, high grip. Makes a world of difference in rapid fire.
Checker frontstrap 30LPI, I’d go 25 at the lowest, 20 can get uncomfortable.
Checker UNDER trigger guard. It’s a “memory” thing for my support hand but I really like it.
Blended Mag well. Adds about .25” to the height, but a bumper pad sticks out still more anyway. It makes even bad reloads look smooth.
Serrate top of the slide. Looks nice, but that’s about it.
Serrate rear of slide. See above.
IF you don’t reload now, I’d say screw the mods for a while and spend the money on a good reloading set up. A custom pistol is great, but only when you get to shoot it a lot. I know quite a few guys that have dumped a lot of money into a gun they hardly ever shoot.
Chuck