Using cheap SSDs in RAID to increase speed/reliability?

Hello c/homelab!

My NAS currently consists of 6TB of spinning rust, one disk only. As time goes on I increasingly think about how annoying it would be to lose it to a random drive failure.

So, I recently had an idea for a new storage setup when I saw a 2TB M.2 drive for £60-70 online. Given the low price, these drives are likely low-quality and probably cacheless too, but I have a potential solution: If I bought 4 of these and set them up in RAID10, would that be a sensible way to effectively double the speed and increase redundancy?

Yes, I know it's probably a silly idea when I can just spend more on 2 faster and more reliable drives, but I would like to at least hear from people who might have tried something similar! So what do you think?