I just restructured my finances so I should have an extra $500-$600/month coming in plus getting a higher paying job should bump it up to $1,000 extra a month. 

Some larger tenants, Cheesecake Factory possibly being one of them, will utilize this downturn as an opportunity for "lease optimization and restructuring" with their landlord.  

I suspect we may have to sell off the single family portion of the portfolio to generate capital to pay down and restructure some of the MF loans so that we have enough cash flow to keep them afloat.

I restructure the deal or I always find a common ground so I get the word- YES!!

I own several residential multi families and I will soon have to get more properties through commercial lending, what's the best advice in how to restructure residential properties for example under an LLC altogether to get non commercial lending? 

Triple net locations if you buy right are easily re-rentable again in case of default.The buildings that are hard to rent are ones that if that tenant left the place would need to be restructured at a high cost to work again.Think Sonic drive thru where the car pulls up,etc.The other benefit of triple net is you can put less down because the lender sees less risk for a corporate rated tenant with strong financials.You can drive more yield with multifamily BUT you will work very hard to get it.In your case I would look at triple net.If you buy rentals and put the wrong manager in then it becomes YOUR problem.Your wife won't be happy and the INVESTMENT will become a core distraction from your main money earner.You asked for our opinions and this is just mine.

When you buy a fourplex with tenants do you restructure the current leases with them or are you locked into the leases they had prior to your ownership?

I'd love to get a handle on this.Anyone have a CPA that can help me restructure the business so I can start to save more?

If that policy were instituted in my state, I would restructure my leases thusly: Annual rent is X. 

Sit down with your CPA and evaluate each property in your portfolio to see if you can restructure the ownership into a "Inter Vivos" (Living) Trust in compliance with these regulations.Please note that I will not go into a discussion on whether Garn-StGermain's intended protection should ethically and rightfully apply.But if you determine that on some of your holdings the restructuring makes sense, make the change on the Title.