You have Sandforce based drives, which tend to respond well without TRIM. If you -really- need the transfer speeds of 2xSandforce 2, then RAID-0 without TRIM is still a viable option, especially if it isn't a permanent one. If not, then as said above, just use one drive for your OS now, and split stuff between them.
Canon 6D|24-105/4L |70-300/4-5.6 IS USM|50/1.4 USM|50/2.5 CM|50/1.8 STM|85/1.8 USM|Samyang/Bower 14/2.8|24/2.8 IS|Sigma 150-600 | C
Canon EOS-M|11-22 IS|22/2|EF-M 18-55