Bags of Multifinish and Bonding (Formby L37)

There is about one and a half bags of the Miltifinish 36kg and about three quarters of a bag of the bonding 20kg. Would prefer all to go at once but would consider separating one bag is unopened the other 2 have been open about 2/3 months. On checking they still a fine powder and have been kept in a dry garage