This kit has it all: Inexpensive, nice, easy to assemble and fun to build. <a href="http://www.laser-cut-kits.scale-train.com/SMDN205GreenHouse_greenhouse-n-6.php" target="_blank">Product page </a>
That's very nice! You've captured a lot of the details. My wife owned 9000 sq. ft. of greenhouses from 1996 through 2000.