4 plex masrer lease option

[Gina Williams]

I have a situation where a 94 year old friend is a motivated seller. He is willing to do a master lease option with me. I want to acquire the 4 plex units and keep it as a buy and hold. I don't plan to sale once I acquire this property. How can I structure this deal and be ok? What happens if he passes and I still have the master lease option. Will probate overlook the contract and I'm passed over and loose al together? He also is thinking about putting me on the deed and then we refinance with me remaining on the deed.  He will then get his money and I remain on the mortgage... He is just concerned about the latter because his income is not high, he is 94 and his credit is 652. What can I do?