Well it depends on you, and the niche of your site, what I can suggest is to perform deep research on the niche, the SEO game has changed a lot now, plan according to the new policies and algorithms, don't try to do it hurry and don't overdo it, start slow and smooth, don't build spammy links, start with fresh blogs, links from news sites if you can, social sharing, GP and HARO. and in on-page focus on user experience too, because Google is focusing on user intent and value, remember you are making content for your users, engage them, because the content is king and engagement is queen, give it two weeks, rest depends on your schedule.
