Agreed. Renters will certainly take the home, along with the attendant price drop. The issue is, will they take care of the homes? Someone with a renter's mentality very likely won't. They just don't have the mindset of "fix it when it's broken" or, even less likely, "maintain things so they won't break". Do you expect them to recoat the roof if a leak is likely, even if it's not leaking yet? Not gonna happen. And even when the leak starts they'll likely just put a bucket under it rather than fix it. And then goodbye roof.
I was careful to buy a park with no POH. I did get one, when the owner left due to health reasons. It was a disaster, but I rehabbed it and resold it anyway (will never do THAT again). In your situation, I would plan on notifying the tenants, with plenty of notice, that the homes are going to be sold, that you'd love to sell it to them, but that a down payment of "X" dollars will be required. If not, they'll need to plan on moving on. The problem then is that they'll likely trash the place because they're mad at your making them leave. And it only takes 3 minutes to do $5,000 worth of damage to a mobile.
See why folks recommend not having POH?