Which Asrock Extreme4 Gen3 do you have - looking on the Z68 one, its got both Intel and Marvell controllers+ports for SATA3 (6Gbps). I'd just put the SSD on the intel ports and leave the hard drives where they are if thats your board.
Also you are running Raid1 - so both drives should be a perfect copy (mirror) of each other. It could be possible for you to break the mirror, remove one drive (stick it on a shelf), move the other to the port you want, boot up, check its all ok, then stick the other drive back in and recreate the mirror.
That is assuming the Intel RST software lets you go from a single drive to a mirror - never done it, never looked to see if its possible.
Do not attempt this if you actually have Raid0. It will lead to data loss.