Just do 30 high PR blog commenting and 5 guest posting on blogs on your niche and you will see a good SERP movement in Google.
Else try :
Article directory submission, social signals, forum backklinks
It is far easier to rank for a small volume, low competition keyword, a couple of articles featuring the keyword in the meta title, header and body text, a couple of backlinks including the keyword in anchor text, being sure to vary the phrases and include a larger number of non anchor text backlinks to avoid SEO spam penalties.
Keywords have low competition for some reason, the chances they are less profitable than those premium 'buyer; keywords.
Sorry I don't understand "very less off page seo"
SEO strategies like blogging, profile backlinks that will use that low competition keyword will help you very much in ranking with Google. I think it will be easier for you to do it because of the fact that it is a low competition keyword. Just balance your links with those non-anchor text backlinks so that your site will be very from any Google penalty treat,
Article submission and link building is the best way so far.
Hal Smith
URLdreamer Consultant
Check this expert seo website
http://expertseobacklinks.uni.me/
I wanna rank in Google. How can I rank with very less off page seo