im thinking i need new mechanicals, plumbing and electric.

There are new electric boxes for all six units split out with a couple circuits run up to each unit, probably just in the kitchens.

They all rent for about 1000/month.My monthly PITI is 2800.00I add in my snow, building electric, oil on two of the units ($1200), water/sewer ($1200) etc and I come to a yearly expenses of 37,000.It will earn 48,000 in rent plus about 1500 in washer/dryer fees.So I have a cash flow of 12,500.

did you run electrical yet or have conduit imbedded in the foam ?

Regarding it being a defective stove.....If it's electric then that should never happen but on some gas stoves the broiler is in the bottom drawer.

I also do my own welding, plumbing, roofing and electrical work. 

Then, changed the electric from 100 amp to 200 Amp.

Your right the rehab does seem too low, its been Vacant for a good time now.And current properties around the said property pay only Electricity

You could itemize the work into specific areas such as painting, electrical, carpentry, roofing, drywall, flooring, appliances, caulking, plumbing, trim, siding, etc. in order establish the amount of work involved in the restoration.

Taxes would be $14K, up from $7400 the seller is paying, based on list priceGarbage annually - $3KLawn care annually - $1000 (lawn care is actually quite cheap in South Florida)Electric for common hallways and laundry room - $2400 annuallyWater/sewer landlord pays - $4K annuallyInsurance estimated - $6K (probably too low)Paying misc. maintenance, paying a management company and paying pest control for what the brother supposedly does for free - my estimate would be nearly $10K a year, probably moreMy NOI based on estimates is about $30K annually, not including debt service.