Im an investor and agent in Phoenix who operates STRS. 

Wondering if they live up to their YouTube videos stating that they help run the operations for investors and provide close to 12% ROI.

These banks may also be able to provide you with a business line of credit to help with your operations.

How to operate a business

I’m looking for any input or resources on these topics, order of operations.

It helps protect your personal assets and keeps your business operations separate.

The 3 states I work primarily in already require buyer agency agreements by state law. 50% of our deals are off market, so our commissions already got written into our offers as a standard operating procedure.So virtually no changes for me. 

You have quite a few things to get more smoothly operating but I will throw out a few quick ones.

You need to pull a permit, then the Contractor has to take down the coping and bond beam a couple feet, then core holes in the pool floor (so it wont ever popout of the ground).

hmmm....Honestly sounds like you should just find a local owner/operator, that is $ reasonable, has been around a good while ... and go with them.