I would say great job if you can memorized and don't forget the keys, but remember that at any point in time we might get an accident or even memory loss, imagine having 1000 bitcoin in those seeds, it will give you stress, and anxiety forever, but as you have said you still write it down, so there no problem if you forget any words , you can check it on you're notes.
But we don't recommend it, for new to crypto, the best is to write it down, and have 2 or 3 copies in different location securely
As it was outlined - OP did that too, but he wanted to share his experience exactly on that.
He truly did well, but the amount of effort is clearly big enough to consider it.