The problem with your scenario is when your OS contacts another portion of the "C" RAID0 array it will slow the array and negate the improvements of RAID0.
Also the array will always default to the lowest spec'd drive of the array.
If you need RAID0 you're best off running the same model drives.
You can try your idea but it's just not worth the hassle and leaves your RAID0 info/data at risk.
i am new to raid, considering iv never done it before. but from what ive read, i want a raid0 array. and i believe that it involves splitting up the infomation amongst the drives correct? so if i were to clone my drive right now, and reimage two drives with that info to create my array, itll be more of a raid1 type array, correct?
i do want it to run as well and quick as possible, its just that reinstalling windows and all my programs is a pain.