Hello!
I just discover Freelancer, so I don't have any reputation to show off, yet :)
I can only say this about myself: I always keep my promises. So, I'll appreciate if you let me prove it.
I know Wordpress very well and I've seen that you are using Woocommerce for your shopping cart. I am familiar with this plugin, too. I'm pretty sure I can work all this out for you.
Thank you.