I want to produce some 5X4 negatives by enlarging 35mm colour slides on to Ilford Ortho Plus sheet film. The slides are landscapes, seascapes and architecture so not too many oranges and reds!

Has anyone tried this? In particular I was wondering what filtration I should use in the enlarger to obtain the best range of tones. Also I shall probably develop the film in D76 1:3 unless people here have any better suggestions.