There were so many things I didn't account for that I could have easily lost a lot of money.

You're absolutely right too, my career at this will easily go up in flames and I'm only 3 months in.

Im surprised your first property didn't sell, if the ARV was really 180k you should have easily got 70% ARV - repairs.Things I would look at are:1) Are your ARV and your repair estimates correct?

Granted I wouldn't have to carry around a huge key-ring, but I would have to "file" the keys for easily tracking them.I'm looking for something that is scalable, and that seems like a good thing since I'd be able to keep 10 or so "extra" cylinders and just randomly swap them out any time a tenant leaves.

I'm hoping to do internal transfers rather quickly and easily at my local co-op.

Yes, I understand it's only $11.55 but that can easily change... 

It's going to be easily 65%-80% of your cap stack, so you should have a rough idea of what is obtainable in the post covid market. 

If they are professional, they can explain this quickly and easily.

I don't like open kitchens (or the big open space) as sound travels too easily into the surrounding spaces, I know others who love them. 

The ones with no mortgage so they CAN quickly, easily make the decision and sell.