EVO Elite arrived today, as did the Apex striker blocks. Taran connectors and reduced power striker block springs are inbound. Also inbound are some marine spring cups which a trusted source is certain improves the trigger pull a bit because: less friction. He's now the second person I know who deals with Glocks professionally who was adamant about not using a lighter striker spring if I could at all help it... not based on guesswork but actual testing by government/military entities.
I think I've been convinced to try the higher power trigger spring especially as long as I keep the gen4 trigger bar in the gun to help alleviate engagement concerns.
My untimed marksmanship practice earlier today definitely proved that simply having a heavily worn in stock Glock trigger was not going to cut it.