Ideal Market(s) For Lease Option SEO?

[Christian Brown]

Hi guys, I am trying to decide where in "my backyard" to start my SEO focus. I live in NH on the seacoast in a small little market (10,000 population); with about 7-8 surrounding towns/cities ranging in population from 
14K-30K people. My strategy is Lease Option Assignments. Its definitely "Pretty House Land". The median house price in my neck of the woods is 700K(ranging from 300s in some small markets to a million+ in others). as you can imagine school districts are all pretty good as well; of course some more so than others. 

The largest market in-land, in the state is around 112K people, with median house prices around 350K. Schools there are decent but not as good as the seacoast. I know that in the process the real challenge is finding the willing home owners'. I am trying to decide if targeting the larger market with the lower housing costs first is best, or do I target a smaller seacoast town then branch out, or since the state isn't heavily populated(1.3 mill) just target NH entirely and then create local pages focused on smaller markets after?

What do you think is the most efficient website marketing approach given these considerations? Are these factors even relevant to SEO and conversion? Love to hear your thoughts!