An essay that's showing both sides of the argument's should follow: I,1,2,3(4), C which is the best structure to follow for this type of writing. I- Introduction. 1- First paragraph (Their point and twist it to your view.) 2- Second Paragraph (Their point and twist it to your view.) 3- Third Paragraph (Your point.) (4) - Forth paragraph ( Only needed for high marks but your point again.) C- Conclusion ( This is where you round all of your reasons off and leaning to your side.)
I would say at least 5 with am opening paragraph, 3 body paragraphs (anti small town life, prosmall time life, and the effect of setting and social situations), with a conclusion.
If you feel you need expand past 3 body paragraphs, consider making a sub-topic or reduce content.