Install High Tunnel with Rain Water Tank for Kale

We are starting an urban farm from the ground up after purchasing land from the City of Boston at a low agricultural price. We have constructed a glass greenhouse for growing microgreens and edible fowers.  Now, we aim to build two high tunnels for growing Kale, Spinach and fancy lettuces. We received a grant from the National Resource Conservation Service to purchase the high tunnels. We need the funds to build them by installing  helical screws to securely anchor them to the ground. This will enable us to have people be allowed to  visit the farm and see how we grow. In addition, we want to install a 3500 gallon rain water collection tank in the floor of the high tunnel. 
www.wegrowmicrogreens.com