NEED Help- Commercial Cannabis property making me buy the building
So I am developing this building for cannabis and I have a first right to buy the building. Ive also been developing this building with a tenant for a CUP to get it approved for cannabis  at the local level. My whole approval rests on me buying the building because a Local Pbid does not approve of the current owner of being approved. They call him a slumlord. He has been cool though.   
I dont have a downpayment. Rent is 5k a month, which is high for the area.  I already have a master lease and a sublease that he has approved,   


He has said he is willing to carry the title for 2 years .  
What are terms I can propose?  I specifically need  a pitch that include little down, and Id like to figure out a rent to  own scenario  


I have to have a contract that im buying it and be in escrow in a week

I can definetley have the cash or the ability to buy the building out in 2 years
[{"id": "evqkp1z", "text": "What is the value of the building? \nOr what is the cap rate for that type property in your area?\n\nWhat can you afford in monthly payments to finance ?\n\nHow fast are cannabis property values in the area going up? What city?\n\nYou could arrange paying a high monthly \u2018finance\u2019 payment to him every month while saving (from the biz) for a balloon payment at the end of term for the balance, in 2-3 years. \n\nHopefully the sublease works out and you are able to make/save money from the business \n\nIf property values are climbing fast and the cannabis market in your area is not yet saturated, locking in a contact now would be best. Don\u2019t wait 2 years to settle on a purchase price.", "replies": [], "depth": 1}, {"id": "evrajdh", "text": "Just remember you can't finance it. So it's going to have to be a cash deal.\n\nHad a lot of drama a few years ago. However still work with the product. If you send me the info. I would be glad to hold debt if the deal makes sense.", "replies": [], "depth": 1}]