I am looking to start investing with my brothers and I wanted to know the best strategy in establishing the business.

well established builder don't see major risk.. 

Once a established home went bad I had it back ready right away, maybe a week tops.

I am taking a wholesale approach initially, like a lot of others I see on here doing, with the anticipation of doing bigger and badder things with an established marketing funnel.

., of the property it may be better to establish a RUBS system or implement a flat fee. 

As far as public exposure you may want to establish a personal property trust with you or your entity as the beneficiary and then assigned the note to that trust when you purchase it and that creates a level of anonymity in public records. 

I can rehab their units and rent them for more than the others and establish the "new normal."

Establish a deadline for completion.

I’m curious if there’s an acceptable (legal) way to establish rent after I know for sure who is interested in it?

Establish protocols with your team, they need to understand how you like to do things when it comes to process, documentation, photos.