Thanks jazzyvee, will see about the balance when it arrives but the overall weight of BB's tends to be friendly to my back, according to my research.
Don't suppose you know of anywhere in the UK that supplies a US style 1/4 wrench/spanner that would work as a truss rod adjuster, by any chance? The bass doesn't have any tool kit with it unfortunately. I've already ordered some Flitz to polish up the brass and a set of Alembic short scale strings