Hello,
In this case catalog mode is not the option you need.
In your case, I would like to rename “Add to cart” buttons, “checkout” to “Request quote”. Also, choose the Cash on delivery payment method http://prntscr.com/pjy4dm You’ll be able to rename description of this method to what you need to explain customer your system of the request http://prntscr.com/pjy57b
And hide the price by minor PHP and CSS customization, for example https://jeroensormani.com/hiding-product-prices-woocommerce/
Regards