Materials arrive for 3 buildings

Our main goal is to always search for materials that are recycled , easily recyclable and will produce a building that is energy efficient and esthetically pleasing to the eye.
We have searched for metal perlins for the last 4 years to build the shop, greenhouse and carport out of. The perlins have either been way overkill , not the right size or for the person removing them, not cost effective to dismantle cheaper than can be bought new.
We decided since the metal prices are at their lowest in years to purchase the perlins for the next 3 buildings. The termites won't get to them and we have placed them on cinder blocks to keep them elevated covering them with plastic to keep them dry.
The material was delivered on what is called a "Bob tail" , it's like a smaller semi that can get into tight areas. He made it OK down the driveway and was just barely able to turn around where the carport will be, so that brought up another question as to how we will get the materials for the main house delivered once we build the carport. I think that is why most people build their main house first and the out buildings after that. I am sure there is a way to figure that out when the time comes. We are trying to think this through from the end as much as possible !