If your mother does not want to carry the note long term, there are GSE renovation loans that can be used for both purchase, rehab, and permanent financing all in one loan.

Purchase price: $90,000 Cash invested: $60,000 Buy and hold that I still have to this date.

Is there any specific area where you could use some support or advice?

You are definitely going to want to get a lawyer and as soon as possible.This will sound harsh.In your story, you have made a number of very poor decisions about how you purchased and managed this property. 

So what specific questions can we answer for you?

Purchase price: $240,000 Cash invested: $60,000 I purchased this duplex in distressed condition using owner financing for $240K and secured a $60K hard money loan for renovations.

Versium has a higher purchase price.  

Deal 2: Duplex (older home that needs TLC in good location)Purchase price: 120k, Rehab 40k, Total all in: 180kExpected Rent: $2,400/month to $2,700/monthDeal 3: 5 Plex (is that even a word?

Now you have your 150k that you spent on purchase and rehab back and can do it again. 

I found a house that I like to purchase in a great neighborhood and the exterior looks great for a 1922 stick built house.