Forced login to see pricing and checkout on shopify

I have a website that I am in the process of changing the theme and all around. Our current website has a block page until a customer logs in. The new website does not have that block page nor do we want it to so we want to hide all pricing and checkout options such as "add to cart button" unless a customer is logged in and have the shopping cart redirect to a forced login page if customer is not logged in. Where the prices are normally we would like it to be a link that says "Login for price". I would also like to know if there is a way to hide a portion of our product descriptions unless a customer is logged in? On our products we have the range of msrp pricing that normal customers do not need to see if they ever come across our site but we need that info on there for our wholesalers. I have tried googling the coding for this work and haven't had any luck using this new theme to do it the way we want.