Affordability is no more that $4500 per month  morthage/taxes insurance. 

Several options you can explore to get the down payment capital: Solo401k; HELOC on personal residence or from equity of the SFR; Cash Value Life Insurance Policy; Business Credit; Private Lenders, to name a few.

I'm unsure if I would use property management at this point, and there would be some insurance.  

However, a different niche such as insurance placements, might very well be in the 70%~ occupancy level but the rents are going to be so much higher that the occupancy rate (comparatively speaking) is irrelevant.

Out of my 32 properties, I’ve seen insurance rates drop by up to 40% on renewals, and property tax increases are finally slowing down compared to the crazy jumps we saw over the last five years.

The ability to find a good sales price under $200K with low taxes and affordable insurance is getting harder to find but in Oh & IN its still easy.Inventory is strong and the rents are above normal so even though your under $200K you can still earn a good profit.

Florida is a unique state for MHP law and the insurance has gotten very expensive there too.I recommend checking out @Frank Rolfe's mobile home university content if you haven't already.

Insurance cost for weather-related disasters is growing to a major concern in many of the southern markets.

And given #3 above, it leaves about 20% of rent for all other expenses like property tax, insurance and other PM expenses like leasing fee, eviction fee and other minor expenses like for e.g landscaping, pest control etc.

This is a conventional loan where they also cover your PMI (private mortgage insurance).