I've been thinking about ways I can upgrade my build in the future. Is it worth adding a second 1080 for SLI or should I just wait for a 1080 ti release and trade up to the ti then? Based off the rest of my build what are other parts I will want to look to upgrade or improve over time? My goal is to be able to run almost all games on Ultra at 1440p and 165fps. Only thing I can think of is overclocking my CPU to 4.6ghz if I need more power out of it.
I7-6700k @ 4.2ghz
NZXT Kraken 61i
ASUS TUF Sabertooth S
16GB RAM at 2400mhz
GTX 1080 FTW at 2000mz 5000mhz
Samsung 850 EVO 1TB and 500GB
EVGA Supernova 850w P2
NZXT H440 white
I7-6700k @ 4.2ghz
NZXT Kraken 61i
ASUS TUF Sabertooth S
16GB RAM at 2400mhz
GTX 1080 FTW at 2000mz 5000mhz
Samsung 850 EVO 1TB and 500GB
EVGA Supernova 850w P2
NZXT H440 white