At this late juncture I suppose it would be a waste of bandwidth to suggest that you should save your money - Huh!
All you're going to do is to radically change the operating characteristics of your new Glock; and, unless you want a finicky, 'range toy', reducing the slide's weight and changing the springs is just asking for trouble. (I know a lot of people who've found it, too!)
Neither do you need to, 'go for your lungs' on a new custom trigger. All ya got 'a do is replace the factory stock 7 1/2 lb connector with an aftermarket, 'Edge
' connector from Ghost. That'll do it; and you'll still have a pistol that you can trust for EDC.
Give yourself time to get to know your new Glock before going crazy and changing things. Buy a case of ammo, get a new belt and holster, or maybe a nice set of, 'Big Dot
' Tritium Express sights. THAT should do it for ya for a while.