Because of point 3... you must go on the each cashu path... I do not see too many options for you.
Discussion
OK, Thank you🙏
I tried to zap you but failed. I see you are using a defunct Lifpay LN address in nostr. You should change it.
Here I wrote a guide for such cases, to start with wallets for zaps.
https://darth-coin.github.io/beginner/getting-started-stack-sats-en.html