What do you think of the method i used to create my wallet?

What i did was, i installed TailsOS on a USB, and downloaded the latest Electrum version, from the official website; Verified the signature, then disconnected my ethernet cable and opened up the wallet, created a new wallet, wrote down the seed words and saved 5 receiving addresses on a text file; Saved the text file on another USB, then closed the app; Re-connected the ethernet cable, opened up my previous Electrum wallet which had been online (hence why i created this new one) and then transfered my funds to one of the addresses of the now permanently-offline wallet;

Disconnected from TailsOS, logged onto Windows, plugged in the USB with the addresses, copy-pasted to Telegram, went to my phone, downloaded Electrum, pasted the addresses from Telegram, and made a watch-only wallet.

As for the seed-words, i wrote only 10 of 12, on a metal sheet, and memorized the other 2 and the order they should be inserted; This way, not only does it make memorizing easier, but if the metal sheet was ever found, it wouldn't have all the words. Redundancy, you know?

Is it effectively sealed off for the next 10 years, or should i do it again, this time with a resetted air-gapped phone?

This was a pretty cheap and i dare say, the safest solution i could think of, because i'm not gonna be making any transactions with this wallet, just depositing, therefore i don't need to sign transactions or anything that is made easier by a Hardware wallet; Just stack sats indefinitely.