Looks reasonable so far, excluding design aesthetics but I assume you’re working on that.
Only thing I would say is be careful with the ecommerce plugin and making it responsive. Are you using jigoshop/woocommerce or the Wordpress e-commerce plugin?
Also what framework are you using skeleton, Foundation?
The only thing I would change so far is the menu.http://webdesign.tutsplus.com/tutorials/complete-websites/building-a-responsive-layout-with-skeleton-jquery-plugins/
Also what board are you using for your rfid, LCD box LOL … You forgot to answer the other thread I started.