Is "take on advertisers" actually all you understood from my comment? I sincerely hope not.
Discussion
Your basic premise is to take on advertisers, which is something I wish to avoid at this time. I get that wasn't all you had in mind, but my goal is to have users pay for the app, not third parties -- if at all possible.
Users pay for the app. okay where? How? Why? Where to find relays? Which relays to pay for?
Good luck if you think users will jump through all those hoops on their own to accomplish that. Build it as an intuitive functionality into the client, that's THE premise. Not advertising.