Hi,
I am Opencart expert. As discussed we are starting with below things first.
1) Remove the spaces from top and bottom of site. Too much space.
2) Change font color of bottom links, its not properly visible right now.
3) Remove the Map from bottom, its too big.
4) Reduce spaces from every section like top menu, welcome section, etc.
5) I dont know the site has sample products or real. But images are missing for many products
6) Enable SEO friendly urls,
7) Change the text color to make it more visible.
8) Header image change. You have to provide image.
My bid is for these changes only. And will do other changes as separate task.
Harsh