So by putting everything down on paper, you can easily correct the client and keep things moving.You mentioned timelines....those are hard to get everyone to agree on in the original contract because a Contractor knows that a customer nowadays will start changing things as soon as they watch that episode of HG TV with their glass of wine.I included on my Change Orders a line to add time to the project in addition to the added dollar amount.

Many BRRR investors like to use our bridge loan ARV product then refi with our permanent product.  

I would take a hard look at a product like you see on vacuum elevators dot com...Best wishes!

You can reach out to businesses that would have interest in your particular audience (make sure you know your expected attendance and demographic); such businesses may include local car dealerships, fashion accessory companies, hair/beauty care product companies, catering companies, etc.

I believe Freddie Mac has products for 80% LTV but the purchase price needs to be over $1mm - not sure if Chicago is a an approved market for this:https://mf.freddiemac.com/product/sbl.htmlhttps://mf.freddiemac.com/docs/product/small_balan...

They may be confused by the moving to NNN idea because non-real estate investors often don't understand that and it may not be customary in your area/product type.

Depending on the sqft. of the apt, you could also lay down 1/4" plywood everywhere (glue and screw it down) to add a little more thickness/rigidity and then use a 3-5mm LVP product on top. 

They know how to get quality products and subs efficiently and cheaply.

More than 4 bidders is counter-productive.  

I've seen several that have rental restrictions, so you may run into this when looking at the single-family product.