That is quite an accomplishment.
lets see, a BB diamond is 90x90 feet, or about 8100 sq ft.. If we add the infield area that is usually dirt we get to about 100 feet or 10,000 sq ft. And it has open space out to about 250 feet, which encourages smooth air.. That is about the same as 30mx30 but his space is surrounded by turbulance producing trees.. Still it might be a plane to try.
also take a look at the GWS estarter.