Fix minor issues in website

Hi I need to do onpage SEO for one of my website.

1. Validation errors to be fixed : http://tinyurl.com/86gudpg
2. It's not optimized for mobile (No mobile CSS, meta viewport tag, apple icon, mobile redirection) so it doesn't render well on my iPhone.
3 )There are 23 images on the site and 16 have empty, or missing alt attributes - This is optimum number we set for better web accessibility. SEO website is to sell products and we have set a optimum number to get few images indexed but not to show all so that to protect them against being copied (google image search).
4.) It's found to have 0 type(s) of Microformat(s)
5.) The website pages can't be printed, there is no print friendly CSS (This might not be a big deal)

I need someone who can fix these issues..
Reply with reasonable amount, I know how much effort its really going to take.
thanks