Hi Birdman,
In that case, for at least one of the other days, I'd recommend a trip to the Harthope Valley in the Cheviots (if you'll have a car with you?) - Redstart, Whinchat, Wheatear, Tree & Meadow Pipits, Ring Ouzel, Dipper, Raven, Peregrine, Buzzard, etc, etc, etc.
Another day, go to Holy Island, combine some culture (castle, priory) with a look at the Lough for ducks, grebes, etc, and over the mudflats for waders (tho' late June isn't the best time of year for good wader numbers)
Oh, and do remember hats for the Farnes. Something fairly well padded. Essential, or the Arctic Terns will leave your scalp a bloodied mess (no joking, they hit quite hard with very sharp beaks - have fun watching the forgetful folk running for cover). Warm clothes, too, the sea temperature in late June is about +11°C, so even on a hot sunny day on land, it'll be a lot colder at sea.
Michael