I work a salaried W-2 currently (same place of employment for 1.5 years and pays ~$70k per year), but am interviewing for a W-2 job which gives a base salary + quarterly sales bonuses (~$60k per year with quarterly bonuses projected at ~$5-7k).

I drive about a quarter of what I once drove. 

I have taking 2 trips around the country going form national park to national park, I also Hike a quarter if the Appalachian trail last summer. ever sense I was deployed to Japan in the USMC I've been slowly reading and trying to self educate myself for about 4 years about anything that can relate to real estate.

To your fourth point, mortgage rates will be headed up from I'm seeing and talking to bankers.

I do mine quarterly, there is a lot that can change in 3 months, batteries in smoke detectors, leaks under sinks, furnace filters, roofs, cellars you name it.

Allocate one-fourth of your PMI to each rental unit and one-fourth to your residence unit.  

We just went under contract on our fourth property!

If you are going to fund a $40k rehab, with quarterly advances to the GC ($10k per 25% complete), and you are a 50/50 partner, don't pay your $5k without your partner paying his/her $5k.

I added a fourth car garage, a giant lanai, a 45 foot swimming pool, and a nice craft room for my wife with all built-in counters cabinets and shelves.

Fourth is any data or stats.5.