Went to the bank and explained asked them to restructure my note to a 15/yr so I could pay down the principle quicker (right now only 75/goes toward principle each month). 

What I'm trying to avoid is having to restructure my business in a year or two (again, assuming it grows as planned). 

Does anyone have some advice on how I might be able to restructure the deal with the seller to navigate around this situation?  

You may want to restructure your LLC to have them as severely minority partners with no signing ability and then close the loans with the citizen.  

Also, I would not be opposed to purchasing the note and restructuring it. 

Also, I would not be opposed to purchasing the note and restructuring it.

and the two lien holders. is there an opportunity to assume the loans or to do some other creative financing with restructuring the loan with the existing lenders?

You will have two payments every month that might end up more than the refi option but both would be paid off faster in the end.Could also consider renegotiating the seller financing and see if they are willing to give another $15k and restructure your loan payments. 

Would this require a restructure once the properties are re-deeded, is that something that would be written into the original loan structure and just carry over to the new addresses once re-deeded, can someone even have a property address changed without consent of the lender, etcAny previous experience with this type of scenario would be much appreciated.  

You may need to restructure your language on that extra $23K - it isn't a problem for you; but it could be a problem for your seller.