Everyones been very satisfied.  

What he is offering is:-His team will do the due diligence on the title to ensure it's clean-acquire the property from auction with room to make 20-50% profit-provide actual comparables-consultation prior to auctionHe wants a non-refundable payment of $2500 to set up an account and the $2500 per property making it $5000 up front (in addition to actually financing the properties in question).

How do I come up with comparables if the house is the biggest one in the subdivision?

I feel like it could be a great investment.If you're satisfied it will work, go with your decision. 

Where are the units renting compared to the market? 

Nor would changing the configuration of lighting, plumbing, etc - the inspector is going to inspect what's there, not compare them to original plans.Other areas will vary, particularly in areas where government tends to be more heavy-handed.

As David mentioned above, buying in expensive markets can be very profitable compared to cheap markets.

Comparables in the area seem to consist of other manufactured homes, "stick-built" homes, and detached homes.

Cost of living is really low compared to other metro areas so housing is affordable.Yes - she is a little rough around the edges but you take the good with the bad and try to improve the latter.

You will find this is a cheap fix compared to the cost of private or bank lenders.Also, for single family ( 1-4) investor loans, Fannie's limits on investor loan is a little more complex than you explain.