We were wondering if it would be best for him to get the degree or to drop out and focus on making money and getting experience in real estate instead (or try and do both)? 

Use the $11K for marketing instead of for a course which, at best, will be generic and will lead to the next course upsell. 

I don't have much advice as now the profits are gone and it seems like the best thing to do is to get your money out the deal and move on.  

I could also just do RUBS on each of the 4 units based on # of occupants or square footage or another method (which is best???).

Orange Street has always been one of the best streets to flip on. 

In addition, some states have different regulations tooI'm sure that someone that specializes in Insurance can give more insight into what is and isnt necessary or best for our properties.

In any case best of luck to you.  

I was looking to get some advice on the best way to finance a small mixed-use property?

That way you can take advantage of the tenants paying down your mortgage and the appreciation of the property .Best of Luck.

These associations often provide networking opportunities, legal guidance, and best practices to enhance your rental business.