Camper "Vanlife" Listing Site

I'm looking for someone to help me create a website where people can list their vans, buses and other categories of camper vehicles for sale. I tried using the Mylisting Theme on Wordpress but I didn't love it. For now I have my blank website set up through Siteground and Wordpress. Here are some examples sites that show what I'm looking for: [login to view URL] - [login to view URL] I would like the home page to look something like this. I really like how their filtering checkboxes work and the map is nice too. This site is for renting rvs. I'm more interested in buying and selling, for now. [login to view URL] - [login to view URL] This is the service that I would like to provide. They are using the Mylisting Theme. It's good but I think it can be done better. I want users to be able to list their own vehicles and categorize everything with filters and add pictures, video, description, price, location, contact info, etc. I will need to be able to add, delete and edit listings myself. Is there a template or theme that you would create for me where I can manage this in the end? Can this be done through Wordpress? Will it be way easier and less time consuming to just start with an existing theme like MyListing or Automotive? I don't have a specific deadline for this but I'm hoping it can be done in about a week. I'll answer any questions you have so we can make a clear plan for creation. Look forward to working with you!