You are totally welcome. Glad to help.
You are going to be working with this theme for quite a while you get your friend's site ready.
I understand that the choice is massive but that is a good thing. Don't feel overwhelmed.
Just like shoping for anything else, keep your objectives (desired features) in mind first and foremost.
And remember, just like with the Contact 7 plugin. Woocommerce is a plugin that you will use to add functionality. Start by finding your theme. After that he plugins will..well. just plug in to your chosen theme :-D
Therefore
- start with pleasing to your eyes,
- then check for functionality (desired features)
- then have a look at user comments/feedback *pretty important in my opinion*
Finally, don't rush or stress. Make sure you pay for a quality product with great support.
I hope this helps.