Not on the growing side, but rather the suspicion side:

With a town that small, a loner will be very noticeable and the rumors will start flying around. Make sure that your crop isn't right by your house, and invite some of the townspeople over every now and then so you have friends that can back you up if anything happens.

Wow, 240 people? I have always lived in a place that's 10,000 times your population size! I couldn't imagine something that small!