Agreed on all points!
I have two 980s, the Oculus guys still recommend not using SLI though (I know the lead SDK dev from my regular forum, he's a nice guy).
Also, off topic, but the CV1 is confirmed to have 2 screens now for IPD purposes, which is interesting!
I'm hoping the VR SLI in the works will come to the 900 Series and won't limited to new hardware. It's why I'm holding out for CV1 and not jumping on DK2. I don't have the budget to buy it twice.