Rent rates have increased so quickly over the last few years.

I mean I will take the risk but I want to double my money in year COC. most folks get stuck on wanting an interest rates :)

When evaluating markets for rental properties, there are a lot of factors to consider: population growth, employment rates, rent to price ratio/GRM/Cap Rate, rent trends, vacancy rates, etc. 

Once you start stacking more and more property loans into your personal name, it can bleed into your personal credit worthiness.This bit me in the butt when I wanted to refinance my own house when rates were in the 2% range.  

Rates will range from Prime (currently at 7.5%) to Prime + 4% (11.5%).

Default rate - as you scale you will have a 10% default rate on loans.

Surprisingly, these homes that once sold for $7,000 are now selling for close to $1,000,000 and it doesn't seem as though the rate of appreciations is decreasing anytime soon. 

I want to cash out refinance and close it under our LLC as DSCR mortgage.

We recently relocated to Phoenix last summer and I'm starting to look for recommendations for local credit unions here in Phoenix which are trustworthy, low rates, personal touch, easy/simple to work with, etc. 

Rates are a bit higher but if you can leverage up to do more than 1 flip at a time, it will be worth paying the lender fees.