SSDs are highly parallel in nature, and the bigger the SSD, the more chips it has, and the more chips it has, the faster it goes. So there is essentially no (or very little) point to doing RAID with SSDs unless you are getting one that is 240GB or larger.
Besides, raid has it's drawbacks anyways. It makes it harder to recover data if your mobo dies, it adds a ton of time to the boot process, and for RAID0 it creates 2 failure points instead of a single one.
That said, I happen to already have a RAID1 anyways for data storage, and I 'happened' across a 2nd SSD for very cheap that coincidentally was the same size and model as my first one, so I went ahead and installed it in RAID0 and it works pretty good. Only complaint is that my mobo is z68 which does not allow for TRIM passthrough over RAID0, so the system has gotten slower over the month I have been doing it. But I picked up a new mobo with z77 today when I went to get my win8 copy, so this should be a problem of the past now.
I'd like to add a couple of details.
That ASRock mobo has a mSATA slot on its underside. It only runs at 3Gb/s, but that's absolutely fine. The only problem with it is, if you use it, you will likely block the installation of a CPU backplate, such as the ones needed by many aftermarket coolers. I had this problem on mine.
Watch your temps, and I don't just mean of the CPU. My "Pheonix" build below originally used this mobo, in a Lian Li PC-Q08R. Nothing was overclocked. One day, in the midst of a gaming session, it cut off, and never lived again. Near as I could tell, a VRM fried shorted. I have had good luck with ASRock in the past, so I suspect this is a fluke (I got the board cheap, with no warranty), but just in case...watch those temps.