Growing a hedge/living fence in a forest

Hi all,
I am interested in growing a livestock living fence/hedge in my forest. I am zone 6, Pennsylvania, with about five acres of woods.

I want to fence in my five acres and use it for goats and hogs. The forest is overgrown pasture that has not been tended nor managed at all for 40 years. Tons of tulip trees growing straight up, and understory of invasive shrubs, multiflora rose, privet, japanese honeysuckle, etc...

I think some well managed hogs and goats can clear it up for me and make meat and milk out of it.

But I do not want to fence it all. I do not have money for that, and there are roots everywhere making it impossible to drive in fence posts even if I had money.

I need a good hedge, but it will need to be a shade-tolerant hedge. The best hedge trees are Osage Orange and Black Locust (to my knowledge anyway) but these trees are shade intolerant, and I do not expect them to grow well.

What can I plant to keep hogs and goats in? Any suggestions?

Maybe mix some Leatherwood bushes with some wild roses? Leatherwood is a native endangered bush which tends to form a long, thick chain a few feet into the treeline. They got in the way of loggers & people clearing for certain things, so people kept killing them off until they became somewhat endangered. There used to be some you'd have to squeeze through to get into the woodland paths by my one uncle's house & they were a good few feet thick, & all the way to the ground, even trying to grow back together & seal off the path constantly. They have pretty flowers, too.

I don't know how well they'd seal in the goats, but wild roses are thorny vines & will climb. Just got to make sure you get the right species. If you're in extreme western PA (like, west of Pittsburgh), it'd be Illinois Rose & for the rest of the state, New York Rose.