Perhaps start with a woodlot management plan? The trees are a significant resource, either for sale as pulp/lumber or as fuel, and take a long time to replace if cut in error. Looks like these folks do it in Bucks County: http://www.savatree.com/woodlot-management.html

State universities often offer cooperative extension programs for small farms, woodlots and pond management. I have used these services in NY state with good results. Penn State website seems promising: http://www.extension.psu.edu/

Then the only other thing you need is a Troy Bilt Rototiller (http://www.troybilt.com/webapp/wcs/stores/servlet/product_10001_14102_91388_54971_-1), the cadillac of walk-behind tillers, capable of turning a parking lot into a petunia bed in 2 passes, the mainstay of every hippie dropout agricultural commune that popped up like mushrooms in the 60's. I used one for seevral years gardening in the Adirondack Mountains, and found it too be most effective. If you are starting with good Pennsylvania hardwood forest humus, you may have everything you need right there on your acreage. If not, cooperative extension will tell you what you need. If you decide to add livestock, goats are easier than cows, and pigs are just too smart for ease of management. Good Luck!