They will connect to your optical drive and hard drive/SSD for sure. It will not connect to your graphics card and chances are not the card reader as this will be powered off of the USB header. The H100i will use a SATA power connection to power the pump.
Why not just wait until you have all the parts and then you will see what they are meant to connect to.
Also, RAID 0 HDDs, are you sure? You already have an SSD for performance, running HDDs in RAID 0 is going to double your chances of total data loss, if one drive fails, all data on the array is gone.
Feel free to get us to check the rest of the parts you are looking at before purchase.