The question is a little confusing, but writing the Hubs is easy with Keywords being the next easiest because it just comes as you write the Hub. SEO comes with good Keywords scattered throughout your title, summary, and Hubs, along with good content (which shouldn't be a problem if you're writing good hubs).
I think that back linking is the toughest for two reasons. 1st - It's usually the last thing I do, giving me less will power to do it. And 2nd - It requires me to go outside of Hubpages, using multiple different sources, which makes it seem like a lot of work. I also haven't figured out my full proof strategy for creating backlinks, so I'm like a wandering animal trying to find the way to high quality back links.