You’re looking at a subdivision. You should go to the county and see what they think. If you operate it as a unified MHP forever, then it will be grandfathered in (you think) and it won’t matter.
There is some legal doctrine that says if you have adjacent parcels you can merge them but the hassle might not be worth it.
The alternative is to wait for xyz to move their homes and then put new homes correctly surveyed on various lots and then, eventually, you could sell some parcels out of the whole. You’re basically buying a subdivision with MHP’s on it – but the per-lot numbering, etc, – this is presumably up to you and the county to figure out.