It will be very difficult to cash flow in Austin using traditional LTR methods unless you put down a huge down payment.

Is the only way to pay for a Reno for my childhood home to sell my current home or is there a method I'm not familiar with that I can use my current homes value to help me out??

Regarding the HOA and CC&R's, the builder can make changes to the CC&R's pretty easily while the development is under Declarant Control.

I could also just do RUBS on each of the 4 units based on # of occupants or square footage or another method (which is best???).

Cash for keys is definitely the best way to get people out in the day when I was very active at court houses steps cash for keys was by far the best way to get folks to move and bad tenants in a state with bad eviction laws to me would be the preferred method. you simply pay them when they are leaving the house not before.. that works fine and you give them more than 1k .. you make it worth their while..

Does anyone have any tips on how to find the right guys or methods that you use to vet people? 

@Don M. and @Joe R.

Well, not long ago somebody made a post about BRRR not being a good method at this point. 

What other methods should I use to acquire another property? 

BUT WAIT, there's more:  Then when I hit submit, I got a message "your payment method has been removed successfully.