All the others, the tenants pay for water/sewage, electric, cable, etc. 

Numbers looks good if no capital expenditure in near future like HVAC, plumbing, electric and all recently updated otherwise add 5-8% towards capex. 

I've been in the construction industry for 30 years, Have held/do hold General Contractor and Electrical Contractors licenses in Massachusetts and Florida.

Knowledge is power.

Also very close to the house and power lines, so that complicates getting it down.

I think the best way to handle this would be to tell them that you found out from the police that this situation is going on and that they have the power to seize your property, if this were to happen again.

You'll also have to have power to those vacant homes while you renovate them.R&M/Reserves: It's hard to give you a ballpark here since I don't know what the park looks like.  

I have what I believe to be a good team put together between plumbing, electrical, landscaping, and general contractors, but will I be able to use anyone who is not on the "203k approved" list?

Concrete:  $75 a yard installedBrick:  $.50 per brick installedpainting:  $100-150 a room with trimexterior painting: $1800-$2500new hvac : $2300new window:  $100-$150 for standard sizes x 2 for installdrywall : $12-$18 a sheet finished (depends on finish level and size of sheets)tile: $5 a square foot installed (add material cost of between $2 and $10)basic stainless appliance package : $2500hardwood $2 a sq. foot installed $1 a sq foot to refinish (add material cost of $2 to $10)plumbing:  $100 per fixture to install and $100 per fixture rough-inelectrical: priced per outlet and per fixture for both rough-in and installTotal rewire of house:  $3K-$6Kupgrade electrical service:  $800Total replumb of house with pex (no slab): $2K - $5K10x10 set of cabinets no frills:  $2500, about 1 day for a capenter to installcountertops: $1500-2000new roof:  $5K (metal including materials)deck:  $2K-$5Kbulldozer/bocat:  $80 an hourdumptruck:  $1.50 per mileCarpenter:  $35 an hour low end + $10-$15 an hour for helpers. 2 carpenters can frame an entire house in less than a week.  

I am here to pay it forward so reach out if there is some info or maybe connections you may be looking for that may move you along faster.My first property I bought was 10 acres with power and no water, bought it for 30k sold it for 50k, I was hooked after that, just kept repeating the process. had a good mentor at the beginning.Good luck here hope to see you around!