If parachuting is happening, then overhead joins aren't the best idea. You'd probably get shouted at for even suggesting it.
I'd probably do the long one - West abeam the field to descend deadside, crosswind to the East and to right downwind, base and final.
Might be a good idea to ask if there are any preferred approaches. A couple of places have said to me in similar circumstances "We'd prefer you to join straight in if you're happy with that."