Also, I personally wouldnt cash out refi right now just because the interest rates are high but thats just my opinion and it really just depends on the numbers if you want to make a calculated decision. 

Personally I would chalk this up to making a mistake not raising it more the first time...eat the mistake and maybe raise it again in 6-12 months.

DSCR is just a simple way of purchasing an investment property when you do not qualify using personal income (Paystubs, W2s, etc..) or you want to close in the name of an LLC.  

This article presents three key factors to consider before deciding that now is the time to sell/exchange: 1) regulatory, 2) economic and 3) personal timing.1.

Personally I love quadplexes.

I would make sure to have a camera system outside if you have any worries about theft, but I personally think you need at least one exterior photo. 

If you need assistance in flipping a property, or really any job an inexperienced person can do, I am very interested for any exposure I can get to real-estate investing.

Part of it is due to a personal family issue, but part of it is due to the high prices and rates.

I haven't worked with them personally but I know they can help with this. https://www.nixonoutdoorservices.com/

The best way to add to your learning on here and in books and podcast is with in-person real estate investor meetups.