First moves with PAGE OFF SEO ? ?

Hello, guys, I need some advises.

I am going to create a website for my services.

The most important keywords volume is ~1000/month. I've got a few keywords like these.

Top 10 sites rank by this keyword:

DA 9.69 +- PA 19.21 +- MozRank 4.05 +-

However, I am kind of newbie on SEO. What should my first moves be with this site when I will start doing PAGE OFF SEO?