If your motherboard or current RAID contoller doesn't support RAID 1 with a hot spare, then you are out of luck. You will need to purchase a contoller with that option if that is really what you want. RAID 1 isn't as cost effective as some other RAID types either.
That said, I see no need for RAID in a home setup. A good backup strategy would help you more in that case. Also, just so you understand, a RAID can lose 1 drive in an array(degraded state) and still function normally. Once the bad drive is replaced, the array will be rebuilt on the fly and will no longer be in a degraded state. A hot spare simply takes the place of the bad drive instead of waiting for it to be replaced and the bad drive will need replaced anyhow. In this case, the replacement drive normally becomes the new hot spare.
Also, as my associate has mentioned, if you have windows 10, storage spaces can be a benefit and shouldn't be overlooked.