Aspire S3-951 and Windows 10 using iRST and SSD caching

I recently installed Windows 10 on my S3-951

Then I wanted to get iRST and SSD Caching to work with the 20GB SSD.

I googled and googled.... and found a Guide how to configure iRST.
https://www.youtube.com/watch?v=wi9d2DGPg1o
But not SSD Caching.

Then I googled some more..
And found a few solutions using diskpart, but Im not sure its the right way to go.
It says that I eather can use the whole SSD for SSD Caching, or split it in two parts,

one for iRST and one for SSD Caching.
http://community.acer.com/t5/Swift-Spin-S-and-R-Series/GUIDE-Install-ExpressCache-for-SSD-Caching/td-p/64381

I need some advice here ...