don't think any of the mail-order or regular nurseries that sell hardy or appropriate stuff for our area have that many plants readily available. likely, growing from seed would get you enough plants for your project almost as quickly--- normally they sprout easily and grow quickly. seed can be bought on line via ebay where a number of species are available.

traditionally the large area and large size screening material on the south coast has been Monterey cypress and Monterey pine with a few blue gums (eucalyptus globulus) in the mildest areas like brookings/harbor. Leyland cypress can be found in most any nursery or "big box" home improvement store.

from my experience in bandon, the fastest growing and most wind hardy big. eucs are nitens (very fast), scoparia, dalrympleana, gunnii, macarthurii, glaucescens.

you can contact me by email ("dismalvista(at)yahoo(dot)com" if you want more info.