I was the same way! Initially I was considering a 9mm, because that’s what I shoot mostly, I have a ton of it, etc.. but at the end of the day I felt like my first 1911 should be .45! Probably my 2nd will be .45 also haha… maybe #3 I’ll go 9mm. All in timeI'd consider adding an integral mag well mainspring housing (MSH) but other than that I would leave it alone. I have had three different 1911's over the years. I am looking at getting another one that is truly heirloom quality. I want it in 9mm but know deep down that a 1911 is a 45 so I'm struggling with it all a little bit right now.