Build a SEO Optimised parking page -READ B4 BIDDING

I am starting a new domain reseller business and have purchased a lot of domains but now i need to develop some traffic so I need you to design an SEO optimised parking page. Here are the things which i should be able to control and change from my end on the page as I will use this for various domains. So I should be able to control and change 1) SEO keywords 2) I need a space where i can input the contact info so that if they need to buy or offer they can contact. There should be a offer space for users to input their offer for the domain 3) There should be a space where i can input ad codes for google adwords or vcommission or text link ads