1. If you can't guarantor marketing funds, you shouldn't be in this business.
2. It seems strange to me to create a new wallet (given that you have been working with other clients for more than one year). I would understand if you said that you do this all the time, but this is also strange because having a notebook with different private keys, and constantly switching from one wallet to another is a complete disrespect for your personal time). As a client, I wouldn't send you money if you didn't sign a Bitcoin message from any Bitcoin Address you've previously used to store campaign funds (or at least the one linked to your account here).