Will I have enough PCIe lanes for a raid 0 upgrade?

Oct 10, 2018
I currently have an Intel Core i7-4790K which has PCIe 3.0 x16, which I assume will be used for my GTX 1080 ti.

My mobo H97M Pro4 offers 1 PCIe 3.0 x16, 1 PCIe 2.0 x16, 2 PCI.

I currently have 4 SSD's and would like to add 2 HDD's in raid 0 (with a raid controller card). I read an article that states hardware attached to the mobo via PCIe slots and not the SATA III interface will use the PCIe lanes from the CPU and not the mobo, will my cpu be able to sustain both my 1080 ti and 2x2tb in raid 0? What if I wanted to upgrade to 4x2tb in raid 10 in the future?