Main thing being is you need to decide what you’re comfortable with having put aside.

Are there benefits to a converted house?

Mainly David Greene in one of his podcasts but I think he emphasizes that it's not bad to start with.

The main reason I even wish to sell it is not for the appraisal value, but because I would like to attain early financial freedom. 

The projects that frankly just suck and are costly but occasionally do happen include a main sewer project (say it collapses), and a roof. 

If you start asking around, a lot of people try the strategy of “buy every time you move” but this only give you some benefits (0% or low money down, low interest rates, etc).

That is my main focus referring notes for a fee. 

@Karam A Tascoe You can cash out one of the property( using HELOC) before 6 month after finishing rehab but I don't see any benefit according to information you provided.

Keeping in mind the added appreciation, tax benefits, etc. on the investment property.

I've found that larger (80-units or more) apartment deals that come from wholesalers are usually a waste of time - mainly because the financials (like T12s, Rent Rolls, etc) are incomplete.