After paying that initial 80K loan off, can that extra 20K be used for anything or does it have to be expenses related to that specific home? 

I was initially going to partner on a flip with a 60/40 split of the profits. 

Then if it makes is through the initial screening process then might go next phase of LOI.

We were initially looking for a duplex but lenders are requiring 15% down for multifamily (I was surprised this was true for first time home buyers).

Keeping in mind, they are the ones doing me a favor by even calling me in the first place.I have a couple other features I would like to add to this intake, such as integrating with the API of an MLS or service like Propstream to pull some of that initial research information about the property (ex: comps) and place it in that initial message which would continue to make me more efficient. 

This implies the cash flow must recover the negative position before you have legit cash flow.I had an offer on a property (at the start of COVID when prices initially fell) that I was planning on adding an ADU and maybe later a JADU (if the OO rules changed).  

Looks like I'll need to find some other way to come up with money for an initial investment.

I was planning on obtaining an FHA loan to lower my initial investment.

If you initially bought the property together then, even though you are not responsible on the Note, you Did have to execute the Mortgage document securing the property.

like I said, this is sort of a self talk and my initiation to becoming accountable in my investing process and figuring this out.