If there is evidence of shoot being there before, I would speak to the farmer and find out how it was run, you may get lucky and find it was his own shoot or may be put you in touch with a local keeper. To finance on your own to start up will cost a fair bit of cashfor fence posts, pen wire netting, drinkers, feeders, corn. will you have time to go daily and check on your birds, top up feeders, stop birds from straying off onto neighbouring land.
If there are any wild birds about now, then I would just focus on these, and put the time in inproving the habitat for them, and step up on the p