I know most on here would love to have their wee bit of wooded paradise where they could do wot ever they wanted.
But as an investment probably many more profitable ways to invest 100K (buy a rental property and spend ur income/profit on stalking) by sounds of it the 1 wood mentioned is about 3K an acre and sounds very steep and uncommercially vaible woodland, can't se any income apart from hoping its value will increase, so ur cash is tied up until u want to sell.
Say u bought a 100K house u'd hope value will rise but also have rent every month
Also with 30acres of woodland ur not really talking about it holding a stable population of resident deer and who ever has the stalking on surrounding fields will probably have more opurtinity to shot them than u.