What theme to choose for grid display of pages?

Hi!

Im new to WPMUDEV and I'm looking for a theme that shows a grid display on the Homepage. The items in the grid should mostly link to Pages, not posts (I know how to do it with posts).

The grid will be similar to a menu: visitors will click one of the items in the grid to get to a certain Page of the website. There they will see another grid, with the subitems of a certain menu.

It would be extra nice if one or two of the grid items could have content that would change automatically: eg a new blog post showing in the grid item 'blog'.

Any idea what theme to chose? I can use Twenty Fourteen by WP itself, but there I only know how to make the grid exist of the most current blog items (and they'd be changing constantly).

Thanks a lot in advance for any thoughts!