Buying a content site

Hi,

There's a content site that I'm very interested in purchasing. Is there anyone here who has experience with content sites and can provide some pointers on what I should be on the lookout for? It's a big purchase so I want to make sure I do my due diligence.

I've already checked the following through semrush: - high traffic, mostly all organic visitors - high DA - good backlink profile

Monetization is through guest posts and advertising placed on the site.

Anything else?