Hey,
Nice. Just keep in mind that if you put your trees in there, they will run the risk of being overly warm and dry in winter. The plants you mention are supposed to be outdoors. i do not know how cold your winters get. But these trees will be exposed to more fluctuations as sunshine on such greenhouse will heat it up, only to cool down at night to surrounding temps again.
Also, as no breeze goes through, the air may get overly moist, resultingn in fungi. I know I do not need to mention that insects will love this as a shelter right...
So keep the thing ventilated. Don´t close it completely, and perhaps keep it out of the sunny spots..