Even though people seem to ignore it there are other search engines(Bing, Yahoo, etc).
I personally always make sure my content/website is Bing/Yahoo friendly. I get a lot of traffic from these 2 search engines - Of course, my main target is Google but I don't mind that 40% extra from Yahoo and Bing(Sometimes even more).
"Optimize for bing/yahoo"= What is this? Ah pretty simple! Basically you don't need to care about much than make it user friendly. I do add 1k+ words on content and such stuff but anyway at moment 60% of my traffic comes from Bing.
P.S: Many say that if Google likes so do the others but I find that as not so on point. Anyway, not opening a debate just saying you should consider this as your 2nd options or even 1st till you get stable on Google(6-9 months). The sandbox is real btw