Reading this with interest, as I need to join the e-commerce bandwagon too. I agree your site is a bit over crowded. For example why a blog and news. Those things are pretty much interchangeable these days, and should only be sidebar links. If you want to sell, put that up front.
I use Wordpress for my site, and am soon to change to this theme:
Savoy - Minimalist AJAX WooCommerce Theme Preview - ThemeForest
Take a flip through the sample pages to get an idea of what modern e-commerce sites look like.