I'd hire a competent carpentry crew and stay in close communication with them, have them video call you daily if possible, maybe even travel to KCMO to supervise.

I advise you to take this time to make sure you get a updated rental agreement/lease between you and him, after you do the repairs; take a long, slow video and lots of photos of his unit (& the whole building- especially rental & public areas) LABEL & SAVE the evidence in a safe place (or two!)

Some recurring advice I've seen in the "Intro to REI" videos and in the forums is to be conservative when estimating expenses, and I'm finding that makes it difficult to make any property cash flow, especially if I'm living in one of the units.For example, this fourplex: https://www.zillow.com/homedet... is only 250k (which is so much lower than most other fourplexes I've seen that it seems like there might be some additional due diligence required).

Check out this video for some useful tips and tricks to make sure you buy a great asset. 

The investor is interested in the Darby, Upper Darby and West Philly market because of the low cost of entry, high rental rates and excellent appreciation.

Other articles and videos on the subject of house hacking will provide much more insight then me trying to outlay every detail.

We will still show your pending property & take backup applications until MoveIn occurs.Lease Signings include signing of our annually attorney reviewed, 27+ page lease, completed MoveIn Checklist & Video – all published to your online portal.Lease Terms are set to avoid end-dates from October to February whenever possible.

Does anyone have or recommend any calculators (online or excel) for seeing numbers on rentals, BRRRRs, short-term, etc?

I admire how you put yourself out there to learn in the real world and talk about specifics instead of trying to do it all in Excel -- I think that's what many people miss.Siempre adelante!

There are great BP videos on this, especially from Anson Young and others.