As an expert with 4+ years experience serving the WordPress community, i would properly configure either YOAST or All in One SEO plugin for your maximum benefit and have a good first step ahead of your competitor for a token.
By default i would choose the suitable plugin for your website depending on your niche, but you can tell me the one to use if you prefer making the choice.
I would also optimize your homepage with the content top keywords, meta description and title tags. This the most affordable and yet effective SEO service you can get on fiverr.
This service is only for WordPress based websites and one site per gig. If you have more than, contact me to get a deal before placing an order.