Certainly it takes years of experience before you can really get a realistic mental concept of what will work and won't work. As well, you need to work up to a complicated scenario. Many of the more complicated but successful milsim series of games started much more simply in their infancy. Also, Listen to the guys with experience (postcount means nothing) and learn to accept criticism no matter how you feel personally on the matter. Don't alienate the people giving you criticism because you think they're wrong.. if they have the experience to back up their opinion it's probably a well founded one.
Don't give up though. I've played airsoft for close to 7 years now and i'm just hosting my first game this weekend. You have an awesome field and using that property for airsoft would be of great benefit to airsoft in Ontario, and as a sport nationally.
"Hokey religions and ancient weapons are no match for a good blaster at your side" - Han Solo
Commanding in Airsoft