Build a Website - Updating Magento Theme

We need to update our Magento Website's theme from Zeta ([login to view URL]) to a new theme that we will be purchasing ([login to view URL]) For the new theme, we will need to move the menu bar from bottom to top, remove the red shopping cart icon on the top right, add company logo to top left, customize the color, and the ensure all products & the company webpages (5 company pages including: about us, mission & values, our business, career, contact us) are updated. Our current site does not function like a store, rather it functions as a request for quotation system. We would ensure during the update, the new theme still acts like a RFQ system rather than store (e.g. any language regarding shopping cart needs to be reworded)