Is the web wallet safe enough for this to hold? Of course, I'm talking about storing private keys and passwords offline, etc... I'd probably barely log in.
Better make a paper wallet of it, you can't predict anything over the internet. The paper wallet is the safest method to store any coin. If they face any issue or get hack by any means then, this can cause you lose funds and at that time private key won't be able to help you. PaperWallet is best and not hard to make.