You could qualify for some safe harbors ( such as if your expenses were below 2500, you could expense it).In general, you could probably use 179 in the property going forward (after the new tax law) but using bonus depreciation  (100% depreciation) is appropriate.

Plumbers are often expensive and a bit hard to schedule, so if it's something I can handle, I will try. 

Lot's of variables here but there are a few routes, but HM is going to be your most expensive if you could get it.

These courses are also available to people without licenses and are way less expensive than a degree.

These loans will be more expensive, but this lowers your margins and can force you to find better deals as well. 

I want to house hack my first investment in order to lower my monthly expenses, I.e. rent.

Vinyl flooring is a bit more expensive but will last much longer and is pretty close to indestructible.  

Most lawyers default to the in rem QT, which requires newspaper advertisement and appointment of a guardian ad litem, which can add an extra $2,000 or so to your expenses. 

What’s expected expenses with these?

I have NOT been able to do this as much as I would like to here, and it's hurt me a bit so far.I would further recommend Option #1 on your list, and I would recommend @Craig Curelop's approach to house-hacking (IMO, his podcast on the BP Money Show and the straightforward approach he lays out is pure gold for anyone thinking about househacking in an expensive metro area).I would buy my first book on basic home maintenance before I bought my first property, specifically How Your House Works by Charlie Wing.