Did you at least chew on a little bit?
Such a beautiful, complex crystal malt. 250g adds a lot to a 20-23 L batch of UK or US pale.
For UK bitters now I go 5-6 kgs Maris, 250 biscuit/victory, 250 heritage. Bitter between 35 and 50 IBU depending on what I want and the resulting beers have been lovely.
For US it's similar but with a kg of munich I and obviously US hops, small frequent additions from 20 mins onwards, IBU range 45-60. You can tweak the base up or down and the crystal to match but it's a great baseline grist for esb, UK IPA and whatnot.
If the beer does turn out a bit sweet, next time reduce the crystal down a tad, especially with the 1968 which seems to like to finish high in my experience.
Hope it turns out great for you though.