Help with wiring amp/sub configuration

Hi, I haven’t messed with a sound system since I was a teenager and how I used to do it was max out everything and blast my ears out until something blew. Now that I care more about maintaining the life of my sound system and getting the best performance, I’d like some advice on the best wiring configuration and amp settings.

monoblock 4000w amp

2 12” kenwood 1000w 250w rms

mounted in a sealed box with a divider

Thanks!