I need my website text font changed, update the social media icons and testimonial

General information for the website: Private PA Services
Kind of development: Customization of existing website

Main changes would be;
Professional Text font required- I'm using Helvetica which is normally good but for some reason it looks strange?
Please ensure the new text font works on tablet and is mobile friendly.
The text font matches on both Google Chrome and Explorer.
Social icons- I would like the ones on the left page removed and just some along the bottom. Just needs the right plugin.

I designed my website in Wordpress and I don't have the time to fiddle with updating the text font to a modern look.
I have also tried to add 'Easy Testimonial' Plugin but I cannot work out how to add the testimonials? If this can be sorted too that would be great :)
If you can help with this and complete by 25th January then please contact me.

Please only apply if happy with the fixed price.

Thank you