Looking for seo advice

I am looking for good services for a website that has 100s of keywords to rank for, what would you guys recommend.

To purchase a SEO service for 100 keywords will be pretty expensive. I would go for a few at first and get them ranked. With the money you then get, you can purchase more Seo services for the other keywords

I also think same.. Divide the 100 keywords in 3 or 4 groups depending upon the competition and first try to rank for the least competitive keywords because they will need less time to rank.. then you can switch to other set of keywords and touching previous keywords once or twice in a week and so on..

If you want to have work simultaneously on 100 keywords then you can hire 3 or 4 seo service provider or freelancer(which are cheaper).. You can assign keyword sets to these service providers.. Later you can select one or two service providers (which provide good result) and can transfer all keywords to that..