Not sure if Businees law is correct. Anyway, I have property A ... I offer a JV to a wealthy person to buy next door property B ... Do I do a lein ?

I own rural property A .. I offered a JV business with a wealthy to purchase next door property B .. and buy cattle and I will work property A & B for profit income only, '' no salary'' for 3 years in return that wealthy person pays for a resort to be built on my land ( property A ) also, the wealthy person gets 75% of total profit from both properties combined & I get 25% for the 3 years. Valuation of property A : $215k, property B : $500k, resort to build : $150k . The wealthy has ask how can there be a trust in this. My Question : I need to convince the wealthy that I am serious and there will be trust instilled in this JV... do I have a solicitor / lawyer draft up a letter to indicate that the 3 year contract is based on my performance, profit or hard work ? do I have a ''lein'' draft written that places my title deed as part of the performance ? do I have an '' Escrow '' draft that puts my title deed as security for the 3 years. ? I feel I need something but I am concerned .. thanks