So I have a run of the mill AO 1911 from Springfield in 45. I'm thinking about dumping some money in it on upgrades. Thinking more of a trigger job and 3# trigger, match grade barrel (maybe threaded), upgraded sights, and work on am I safety to make it crisp, and full length guide rod. Giving it to a gunsmith what would one think I could get done over all for $1800? And what about $1000?