I will be having an electrician doing some electrical work as well. 

Why get into electrical and cutting into the roof when it won't affect your sale.

.- get a 6 month history on water, heat, gas, electricity from owner (preferably from providers).- find out property tax (propertyshark.com)What else do you suggest?

Obviously it would be cheaper with a smaller place.I'm also spending about $50/month in internet costs, plus whatever gas and electricity amounts to.My total up front cost for setting up the apartment, including deposit and first rent was about $11000. 

Which means the heating is most likely one single furnace (oil, electric) in the basement that feeds all the apartments and unfortunately because you can not determine what apartment uses more heat than the owner is stuck with the bill monthly which can throw all your numbers for a loop.

Plumbing, electrical, foundation, paint in and out, and resell owner finance.

I'm still pretty young and have plenty of energy to get **** done!

With that being said, these are high quality energy efficient windows that were purchased and installed about 5 yrs ago and qualified for a rebate.

When it comes to residential (1-4 units) and small multi-family (5-10) we typically purchase distressed properties and perform a deep energy retrofit, with the result being units which operate 40 - 75% more energy efficient following the retrofit.While this does not necessarily increase the rent we can command, it has proved to decrease our turnover and vacancy - tenants stay longer and, when they leave, we often have word-of-mouth applicants before the unit becomes vacant ... just last month we had 5 inquiries and 3-applicants on a property we had yet to advertise.

I graduated from the University of Massachusetts - Amherst in 2010 with a degree in Electrical Engineering and Engineering Management.