Evolve theme customization – Help

Hi,
I found the Evolve theme, which I love, but there are a few things I need to change. Any chance someone might help me with this?

1. Is there any way I can get rid of the “search” box on header and posts pages? I just want to show the “Follow us” box on the right, instead of the “Search” box. In settings I just find “Search + Subscription”, “Recents+Search + Subscription”. If so, any way to place the “Follow us” box in the menu bar or above/below it (on the right)?

Could I make those social icons smaller?

2. Can I insert custom buttons in the posts sharing box? I’d love to get some extra buttons such as “Like” from Facebook or Google +1

3. I set the language to Spanish, but the spanish for “Search” is “Buscar”, which does not fit the box size, so it says “Busca”. Any way to fix this? Can I expand the box size? This would imply reducing the length of the “Type your search” field.

4. The phrase “Leave a comment” still showing in English. I tried editing the es_ES.po file with Poedit, but there’s no field for that. How can I fix it? I could help translating into Spanish.

I know it’s a lot to ask, but I’be really grateful because I have almost all set to start blogging

Thank you