Looking to expand RAM

Hi, I'm looking to add 16 GB of ram to my rig to get it to 32. I currently have 2x8 G Skill Ripjaws V with these specs: CL16 (16-18-18-38) 1.35V (PC4-25600)

Where I'm from I can't find exactly this kit but I may be able to get Ripjaws V 2x8gb PC4-28800 DDR4 3600 CL16-19-19-39
Not much of difference, but I wanted to ask anyway. Would they work together without problem?

I know if they work, they work at the slowest speed but I'm concerned that even as they both are G skill I will have more severe problems while gaming/streaming
What do you guys think?
You'd probably need to adjust the timings of the older RAM to match those of the newer kit, assuming they even play nice.

It may be easier to just buy new RAM and sell the old stuff.

However, for general gaming and streaming, there's be no benefit to more than 16gb.