You've obviously thought this out extensively and decided to advertise. Who am I to offer a better solution? You know your business domain, revenue needs, etc better than me or anyone else.

However, that does not mean I have to agree to advertising -- whether it is labeled ethical, green, sustainable, cage-free or whatever. If you're lucky, you won't have a lot of extremists like myself visiting your site; i.e. the advertising will be successful.