Are you quoting net cash flow - after taxes, insurance, maintenance/repairs, property management if needed? 

This account is also used for any maintenance the property may need.

I would suggest reaching out to owners of multi family who have no loan on the property.

Unfortunately each one is worth 25k. thank you  traditional lenders are not going to finance these properties.

Similarly, if you put several Class D tenants in a Class A 4-plex, what do you think will happen to the property?

Upon inspection the appraiser will see the crawl space and see it was a mobile home plus a HUD tag and public record.One of the requirements in mobile home financing is the property "Must" be on a concrete permanent foundation(in order to be real property) on top of that it requires concrete pillars, skirting and the "Well and Septic" dug and placed within legal distance from subject property.

And will you be utilizing property management firms to help out? 

Could be $5,000 per property up to $20,000 per property.  1.

I also own a small STR property management company and own two STRs out of town that I operate remotely.

My name is [Your Name], and I'm a licensed architect with a passion for turning ordinary properties into extraordinary investments.A Bit About Me:Architect & Investor: With over 10 years of architectural experience, I've had the privilege of designing and revitalizing a diverse range of properties—from cozy residential homes to bustling commercial spaces.