Striking that balance between strategic and action-oriented behavior is a challenge.To the more strategic end, are there any comprehensive checklists for getting a complete REI operation rolling, particularly using the BRRRR strategy? 

That kind of behavior can get all the involved parties in unnecessary trouble.  

Even if the buyer were trying to get past the listing agent, as long as the seller abides by the listing agreement then there should be no problem with ethics (the buyer didn't sign a listing agreement and isn't held to any standard of behavior as far as the listing goes.

If they don't correct their behavior immediately, we follow up with a letter of clarification about the terms of the rental agreement that were breached and what we need them to do, as well as what we will do if they don't comply.  

The important thing for the OP to understand is that this behavior is much more common than not and there is a TON of profit built into the projects of the average residential projects for service companies, because they are by design bidding a ton of projects with the intention of only taking on a small percentage at the highest profit possible.There's also the question here of why you went with an A/E firm from the start? 

Like a number of others I have watched.Point being this is still TYPICAL BANK BEHAVIOR around here.

One had mental issues and we ended up evicting him for unacceptable behaviors and the other was allowing multiple family members to 'visit' for extended periods and do laundry at grandmas.  

If we look at trends and newly identified behaviors based on the current pandemic I think the tides will sway a little more in favor for a SFR or garden style apartment for the foreseeable future.

My husband doesn’t want to get a duplex because he said he wants privacy ( people have too many bad behaviors )   I am starting with wholesaling since I don’t need much amount of Money or credit and then I can be saving my money to start buying properties and build a portfolio ( what strategies should I pick with wholesaling?

She was fired about 2 weeks ago, mainly for behavioral issues.