Since I have a mortgage on one of the houses mentioned above as well as a HELOC on my primary residence (I used this to pay cash for the fixer upper that is currently listed for sale), what would be the good way(s) to get another mortgage for the third investment homes? 

Third, consider the seasonality of both renovating and selling.

His lease agreement states there’s a maximum of two pets in the property.I do understand his situation, so I am leaning toward allowing the third dog.

The carpet seems ancient and there's a trend here to vinyl faux wood that seems to be doing well.Ignacio, I've been the guy to tell people this too many times in this website in these days, but you're not going to get a kitchen remodel done by a third-party contractor reliably during this time in your neck of the woods.

That will provide you with the economies of scale necessary to hire a third party property manager. 

Not amazing, but it's my first BRRRR (third property) and I think its passable.

If my personal bed and bath are 10% of the total sqft of the unit, would I call my personal usage 10% + 10%*[sqft(kitchen,dining,family)/1200sqft], or would it be 10% + 33.3%*[sqft(kitchen,dining,family)/1200sqft] since there were three people living in the condo and I was using one third of the shared space?

Investing here, has me giving it a second and third thought. 

When I was doing my BRRRRs all banks said a year, granted the third property I got done with a bank was in 2 months. 

I actually do have diversity from the standpoint of bedroom count with the two I have and the third one being built is almost double the size of the current four bedroom.