1000 or 1250 PSU?

I was able to snag a 5080 today. Doing a brand new build. I would like to upgrade the 5080 to a 5090 or possibly next gen upgrade. CPU going to be 9800X3D.

I am building in the fishtank style hydrangea blue thermaltake case 380 and I would like to get the 1000 watt hydrangea blue color, but I am worried, would 1000 watts be enough if I decide to upgrade tot he 5090 or next gen GPU? Or should I be safe and just get a black 1250 watt PSU? It won't really go with the blue scheme but I would have peace of mind for an upgrade I guess.