Starting greenhouse harvest trying to make as Organic as Possible!! Help plz..Thanks!

I am starting a fresh grow room in a greenhouse with elevation at about 1500 ft so temp. is gonna be slightly higher and slightly lower than most. The greenhouse was a little dirty but i managed to clean it out from inside and out. While cleaning i experienced how hot and humid it could get in there and made it a must to try and find out ways to get nice cool air in there. The greenhouse is 7 by 7 by 8ft tall and i found out it could get really hot in there. Also, there is not much ventilation except a small window by the doorway and through the small slits of the roof so i need to figure out better ways to better my air flow..any suggestions?? I currently have one big fan pushing in fresh air from the outside, the fan is installed in the only window that the greenhouse has. I have 3 smaller fans set up around the greenhouse, but I plan to find a better way to set up all the fans to circulate the air more efficiently. I am starting with 6 different clones at about a foot tall each and 2 more clones at about 2 ft tall. The 6 clones i transplanted into 5 gallon smart pots and the other 2 clones i put into 7 gallon smart pots. I just transplanted into some Organic soil and plan to keep my grow as organic as I possibly could. I also realize that i started my harvest a little early in the yr but that would just give the plants more time to grow in their vegitative state correct?? I also just bought my nutrients and was told that the organic soil should be good for the clones for another two weeks. I watered them when i transplanted them and i watered them again today, i now realize that i mightve watered my babies a little too much. I just transplanted maybe like 2 days ago. I have been doing research on indoor and outdoor grows but havent had much luck with greenhouse grows. Would love as much feedback as i could get. Thanks so much!! Looking very forward to a long and beautiful harvest with these babies got so many exotic and nice strains in this batch!!! #1sttimegrower

With out heat a greenhouse is called a cold house(cold frame)....As u can tell it's not very cold in there in the summer. You will need another vent if you only have one and maybe a swamp cooler.(remove panels 4 summer?) Shade cloth on the roof will also help...............

They are best used for extending ur pre and post growing season using heat and lights. With heat, lights and a blockout cloth u can get 4 grows a year out of that thing.