Menu layout and product categories layout

Hi everybody,
I’ve some questions about this amazing theme (Enfold) and some about WooCommerce

[enfold]
1) how can I easily edit the font size of the menu bar? I need to enlarge the font size.
2) are there some menu layout presets included in the theme ready to use? If there arent, how can I easily build some menu

[woocommerce]
3) I’ve created about 20 categories for my products and in a page of my site I need to show only a subset of these categories.
In woocommerce’s documentation I’ve seen that it is possible to define the ids of the categories that I wanna show.
So, I’ve tried to put in one of my page:
[product_categories parent=”0″ orderby=”name” order=”ASC” hide_empty=”1″ ids=”cat1″]
or
[product_categories parent=”0″ orderby=”name” order=”ASC” hide_empty=”1″ ids=”cat1,cat2,cat3″]
but it doesnt work, it show all the categories. cat1,cat2,cat3 are the slug that I see in categories page. Where is the mistake?

4) is it possible to edit the layout of the product page? if so, how? and from which menu I can do that? I need to remove some widgets such as “latest comments, search box, recent posts”.

5) is it possible to change the way it shows the products of a category? I’d like that from a category list, clicking on a category, I see a grid with all the photos of the products belonging to that category (instead of seeing a textual list of the items).

thanks a lot for your support