Which Nvidia graphics cards should I use?

I just have a gaming PC with an Nvidia 2070 Super but will put the under a custom water cooling.

Then I had the idea to upgrade and I need your help.

Would you buy a 2080 Super or another 2070 Super and then use the cards in the SLI.

Will do custom water cooling soon.

I'm currently playing: GTA 5, COD Warzone, COD Modern Warfare, Valorant, Minecraft, Fortnite (Fortnite very rarely only with friends)

Nothing, I would wait until the 3000 series are only 3 months

Sli is pointless and only causes problems.