if i were to start all over again, i'd go with a ruger gp100 and then "graduate" to an auto after i got good with a revolver- my first auto( 30 + yrears ago) was a colt m1911a1 in 38 super, ( basically, it's a "hot" 9) -you're going to have to learn to police your brass, get extra mags, then a holster, and mag pouches- plus the sights on the norc are minimal at best( as they are on any issue 1911) and you'll probably spend as much customizing it as when you originally spent on it- now as to 9mm vs 45, if you reload, well it's about 4 bucks more /1000 from my experience
it breaks down as this-
brass is roughly the same,- shop around, and if you can get the small primered stuff- nobody wants it, and it's an easy primer change- besides, it's good brass- the majority of the players in 45acp don't want to be bothered changing to the small primer
your primers are the same price as they're both small primers- your large primers are a fuew bucks more
your bullets run about 5/1000 more, but it's a heavier slug( 200 vs 124 typical lead)
your powder - i run 6 grains in the 45, 5 in the 9mm- minimal difference
of course, all this goes out the window if you insist on buying factory
go for the revolver, and there's no extra mags to buy, no policing of brass, and you can shoot a 38 special as cheap/cheaper than 9mm- it's quality you want rather than quantity