A letter like this has more weight than a verbal offer, but requires less work than a formal purchase contract.

Things we cannot control are not a real weight. 

It's quite likely this is just part of their standard procedure (as you mentioned all banks want statements from your checking and savings...) and perhaps they don't give the 401k statements too much scrutiny or weight regarding loan decision since the 401k can't be used as collateral for the loan.

Having a bookkeeper that not only understands "debits and credits", but also understands the various operational, financing, and investing activities specific to each "type" of real estate activity is worth their weight in gold.

But I guess it's nice sometimes when you are able to make it work out.If I delayed closing by 60 days and closed exactly 12 months later, would that have any weight to it?

Why did you put all your weight on that sale and not this one. 

My business partner and I currently have a tenant renting commercial space for her weight loss consulting business. 

If you're outside the coastal zone, it's way less of an issue.As a general comment, I will add this, based solely on what I've learned in my life journey (put as much or little weight on that, given you don't know much about me): "Real Estate Developer" is a professional position as projects get larger. 

However, if you have a demanding and successful career, you have to weight your time's ROI.5.

., so i give it weight.