No idea what IRST is. EDIT : Oh, Intel Rapid Storage. Should work on that motherboard.
I don't have any particular software with my machine. Maybe an anti-virus like Avast, which I used to use, but now sticking with Microsoft internet security.
Video Lan I suppose, MSI Afterburner for overclocking, recording videos and monitoring the GPU in-game, Hardware Monitor, although there probably other alternatives like Speedfan, some benchmarking software to check everything is up to speed (Unigine, Prime 95 / OCCT for overclocking), ATTO / ASSD for the SSD, memtest86 for checking if the memory is stable...
Can do some tweaks for the SSD, like moving the page file to another drive (save a few gigs), disabling hibernation (saves 6GB), flashing the SSD to bios 000F (very easy to do with the M4).