Is using 2 solid state drives in RAID 0 going to be reliable?
All drives fail. Either through wear, or though manufacturing fault. By placing those drives in a RAID0 configuration you have doubled the chances of a drive fault destroying your data.
Dodgy SSD's tend to halt for up to a second which is fatal to RAID usage, but if you're using the Intel ones, don't fret and go ahead and RAID them, they'll probably live longer than your 2 years target until the flash wears. Just don't forget to update the firmware