This is where I got my 36x78 barn in the 2001 & a couple of big cattle sheds too 36x98. The Goodon crew built the open front sheds in a day each & the barn took two days. They had a fork lift & hydraulic post hole digger for machinery and a couple of levels, hammers, cordless drills & a skill saw for hand tools. Very simple construction.
http://www.goodon.com/
Something for the future owner of the building to consider is how high do you want to go, what might you use the shed for in the future when it's no longer a rc clubhouse... the higher you go, the more costly to insulate, heat and cool.