For your trip, don't worry about filtering the oil- be worried about the oil leaking out of the engine. Talk to the previous owner (we call'em POs here) and make sure that she effectively plugged them. If not, get a wrench out of the tool box that you might want to add to LittleBuddie's list of items, take off the lines and go to the auto parts store (FLAPS in Stovebolt language.) Tell them to provide you with some teflon tape and caps to plug them.
Remember that your new truck probably doesn't drive at high speeds. (Again, talk to Ms. Policelady about it.) I wouldn't be surprised if you top out at 45 or 50 mph. Give yourself plenty of time to drive back.
Make sure the radiator is full before you hit the road.
Lastly, go early. You don't want to run out of daylight if you can help it!
Bill