I buy land and the seller buys my land

[Kyle Oberkoetter]

We own a piece of land outside an Opportunity Zone and are in negotiations with someone who has a similarly sized parcel of land in an Opportunity Zone. We want to exchange parcels so our future development will fall inside this OZ. Due to the IRS laws of obtaining land in OZ we have to actually purchase the land and can't do an exchange. We would have a simultaneous close, so little money would actually be changing hands. Is there any type of approved Colorado contract. I've looked on the CO  division of real estate website and haven't found anything. Figured I would ask here before contacting an attorney. 

Thanks for the help.