Consultation of Accounts and Contacts setup for Dynamics 365

Hello, I'm looking for some help and consultation on the best way to setup my Accounts and Contacts structure based on my business requirements and nature of the business. We are working on setting up Dynamics 365. I need help from someone experienced who could sit on a call with me and go over the pro's and con's of each setup. I will be doing both B2B and B2C business. Most importantly I need this setup to be Day 2 Operations friendly.