Theme Customization

Thanks for the wonderful theme (Catch Evrest) we have just got our wesite www.impelpro.com customized but need help on bellow points : 1. The entire space right of the logo looks empty can I have my menu moved there. 2. Are there any other styles for social media icons alternatively can I add my own 3. In the footer it says "powered by Wordpress : catch Everest " can I change this to say something else. 4. Can I add "Request a quote" for on the home page. Please feel free to give you suggestion since I am new to Wordpress as well...