Is this too much or not bad? I plan to keep my recovery keys in four separate locations, a brand new flash memory from Huawei, a brand new WD External hard drive, my book with a strong cover and my wardrobe, in my wardrobe you can't easily see it because its always dark in there, I use my torchlight to carve those words in there and its even written on the top inside the wardrobe, I tend to keep it this way for now till I can get a Nano X.
About the ways to save the seeds you have already been given good answers, what I want to focus on is to save them in 4 different places. If the funds you have are something like $20 it seems to me exaggerated, it would be more logical to want to save them in so many places if you have something like $2M. Although it seems to me you're closer to the former than the latter if you don't have a Nano X yet. I would think a couple of different sites that are highly secure is fine.