There is no floor layout for us to see what s/he means.These are only a few examples of why you need to get deep into the details of the rehab if you intend to make money on this or any other flip/spec rehab deal.

For $3,000/month rents, the tenant would have to lay out $12,000 or more.

Good idea to lay out instruction sheets on things like disposal and have them read and intial them as part of lease.

I am not sure how Grant Cardone defines it, but he has different classes based on where in the deal cycle you invest.As you very well layout, the Class B is taking a backseat to Class A.  

Lay out your argument to them and ask for their support.

That sounds counter intuitive, but the reason it's true is because with more units, you can afford to save more money in maintenance reserves, you can afford property management or a full time repairman, they are much easier to finance (I've had bankers tell me that multimillion dollar properties are easier to finance than single family homes) and so on.

It just depends on the building layout. 

Best case scenario, you find a team who can seamlessly blend both.Container-conversions can be stacked, shifted, even placed on end creatively but a lot of engineering is necessary if “optional layouts” become too lengthy.

Backyard layout is open no fencing and access from the back so would not be invasive to our current tenants.

Should I swap the second king for a queen so there's more space or keep the king and a tighter layout?