Just to play Devil's Advocate, are you confident in vacancy being that low?

Converted everything to electric heat and metered it out to the tenants.

I am almost certain my offer will be declined but since the house has been on the market for over 90 days in a region that most houses sell in less than a month I took a shot at a low ball offer.

As you can imagine the low fee listing companies want easy buyers and to do volume to make any kind of return.    

Here is a article on what you can do for a low appraisal:https://www.realtor.com/advice/buy/4-ways-to-deal-if-your-appraisal-comes-in-low/If you think the property will still be there in the next few weeks, I'd resubmit the exact same offer.

Assuming you agree with that statement, then you would be buying at the top of the market, which would be exactly the opposite of the saying, "Buy low, sell high", but you have the convenience of potentially waiting out the coming correction and earning some good money on your property while having your tenants pay down your mortgage for you.  

Also, does any owners of units simply go through and replace the anode, thermostat, and heating elements for less then $100 in materials and find that has proven to be a solution to get the units to last another 7 to 8 years?

The tenants are very laid back and I have ran these ideas of updates by them and they have no problem with it, especually considering they are paying for heat and this will deduct on their cost. 

As such I'd like to find someone knowledgeable that has experience either wholesaling or renting out properties with Section 8 or in low income areas.

Also you can buy the long lasting carpet and put it in the low traffic areas (I.e.