Just a few items; lumber prices are up 325%, conduit is up 50%, any product which is produced with materials from one country and assembled in a different country is taking 3x the normal lead time, at best.  

The articles you are reading on google normally skip a lot of important factors to get to the benefits of a Series LLC. 

The rental market is hot right now so it probably wont matter, but in normal times, I like to pay a bit extra to get a 2-tone paint (tan/white trim) to make the unit stand out a bit, but again, just preference - I don't think either get you more in rent. 

Under normal circumstances, I’d do the cash out refi, but I’m tempted to suggest getting this larger line of credit and maybe investing in a cheaper market and seeing if you can pick up some better deals by offering cash, then refinancing out of those instead.

It could appreciate but I consider that gambling.

Most of them have specialty’s that they are really good and competitive at.I’m unsure where you are in the process but normally I advise clients to go get 1 preapproval from a reputable lender.

If you need to push a less critical date 1-2 days and you still have contingencies in place normally an email will suffice, assuming all party’s are cooperative. 

If you would normally pay $1000 for rent and with the house hack you still pay $500, you are still saving $6k/year.

It's a popular loan style overseas that allows all normal banking deposits/idle funds to sit on your remaining balance and thus save interest cost.

Sometimes I come across doctors or lawyers looking to invest, but these people are normally working with real estate agents.