This project put forward by a tenants'association appears to be straighforward and manageable, although there are still several issue which need addressing. My first question for this topic would be: do you really want to find out how many of the local residents are interested, or do you want to find out the interests of residents with children of the appropriate age who would actually use the scheme? if the letter is the case, this narrows down the researsh population and makes it more manageable.