If you could do this and the multifamily property can stand on it's own, you might have enough equity free to get that one done too, depending on the financing possibilities available and how flexible you can be with terms. 

We have one of our properties for rent and are accepting applications.

If you plan on making it your primary residence, I would focus on one of the renovation loans as that will get you the best pricing.

I want to jump in that hot tub with my kids after 8 other strangers have been in that same water doing who knows what - said no one EVER.4) Depending on the market you are in, it may be required to drain, clean and refill after every guest.I have 4 hot tubs and two of them are on wells.  

We also sell some of the duplex as 1/2...so sometimes it is listed as duplex, the pictures make it look like duplex, but really it is 1/2.Another strategy might be to buy 1 with 5% down, live in it a year, then move to the next one as a primary and use 5% down and repeat as long as you can...and of course if the numbers work. 

Two garage doors (one open area inside).  

I am needing to replace one as well.

The benefit I see in ducted minisplits is they can use just one thermostat instead of a separate one in each duct. 

What are some usual steps the house hacking community takes to start building a portfolio after the first one is successful?

@Nathaniel C.You will probably have to depreciate the bathroom repairs if it was on one invoice.