Good afternoon, Steven, and thanks for contacting CTB.
I regret that you have asked for opinions that we are not equipped to provide because we are not familiar with development and operating costs in your goegraphic area. You might consider contacting a local advertising agency and asking them for a bit of pro bono consultattion regarding your questions.
Within CTB, you might consider entering "social marketing" in the search box at the top of the page. That will generate a number of "hits" but probably not specifically relevant to your question.
You might also click on our "Help Taking Action" graphic and then on "Database of Best Practices." You may find organizations listed there that can assist you.