You want your 3 drives connected to the Intel SATA ports in RAID mode.
See page 65 (Section 3.4.4) of your motherboard manual.
Connect your SSD to port SATA3_0 or SATA3_1. Connect your data drives to ports SATA2_0 and SATA2_1.
See page 12 for the location of the ports.
Since your SSD will not be part of your RAID-1 array it will automatically default to AHCI mode.