What is the best CMS for a modeling agency website with a database of models and filling out an online questionnaire?

Question

CMS

We now have a WordPress site. Well, i.e. main page, blog page with broadcast posts from instagram, page with a profile, pages with a database of models. The questionnaire was implemented on the CRED Form plugin. The user enters a name, age, other parameters there, attaches a photo, and in fact creates a custom post - a model with custom fields. The moderator then checks the new posts of the models and approves the necessary ones. And the page with the database of models is implemented on the CRED Views plugin, which displays all model posts in ajax mode on one page with the ability to scroll.
So. All this sometimes slows down)) Is there some kind of more suitable cms for our needs, or can we make a base on the Internet store engine (people instead of goods))? Or is it generally easier to order development without cms.
Screenshot of the page with the base, you can go to each model to see pictures

spoiler

Answer 1

for such scales it is easier to download wordpress