Hi. I'm a web developer and create this theme using underscores.me, if you like download for use me or fork me!! for upload me :P
If you want all functionality looks good you need this plugins:
Remove Category for url:
https://es.wordpress.org/plugins/remove-category-url/
Jetpack for comments, image optimice & security:
https://es.wordpress.org/plugins/jetpack/
Create form contact:
https://es.wordpress.org/plugins/contact-form-7/