Quick update:
After doing a little more research I decided that the keyword that I came up with initially probably isn't a good one to target. Therefore I am now working on content for a completely different niche. This is a niche that I made a bit of money from last year with one of my ecommerce sites and so I know that their will be ads showing for it.
The new KW has 1000 exact monthly searches with a CPC of $1.35. I have bought an EMD for this niche, installed wordpress and went for the HeatMap theme. (Please let me know if you think I should go for a different one). I have also written one 500 word article so far and will start working on another one now.
Should I have my articles as posts on the homepage or just link to them from the homepage?
I personally sticky my main article, the rest I have as normal posts.