Still over 2% duplicated frames so I'd increase the downscale one more step (for a smaller stream resolution). 2500kbps is up to you, the reason to go smaller is because your viewers might not be able to download it. I wouldn't do 60fps, your computer has a hard enough time with 30.
Also your keyint is 30, it should be 60. Change your keyinterval to 2 seconds.