Build an Online Store and get traffic to it -- 2

Hi, I am in the process of putting together an online store and I require the following; >Putting up of around 150 images and sizes, colours etc that go with that. (There are currently around 50 images already up but the job was unable to be finished by someone else. >Correct the way that the sizes are showing at present form large to small to small to large. >Make sure that all meta tags and keywords are correct and add them with the new products added. >Make the images on the page which shows products for sale larger. >Make my site SEO ready and do what is necessary to be on page one; google. >Set up some discount vouchers for opening launch and specials. >Add front page images to attract customers, must be classy and professional finish, shop now button etc. >Test paypal and review letters that are produced one client purchases and order being dispatched. Currently using opencart version 2.0 so would appreciate expertise in this field. Basically I would like the store ready for business once completed. Many Thanks