If you want 5 page rank for your site, you need to do all types of submission like directory, blog, article, social book marking, classified and forum etc.
First of all you should get your domain registered for 4 more years as it helps create trust.. this is a vital factor for gaining Page-Rank.. along with all other seo techniques
There are several ways to get backlinks but getting pr 5 backlinks is not easy. The best way to do it is find sites that offer backlink packets where it gives you several sites where you can post your backlinks some even offer video tutorials as well and offers ways for your backlinks not to be deleted on high PR sites.