I'm a Classic driver so my figures will no doubt be out, but I'll have a go since no-one else has yet.
I don't know how long it takes for a trip like that, but you could plan on about 500kg's for taxi fuel, 8 tonnes to top of climb, then an average of about 9.2 tonnes per hour after that.
1.5 tonnes for the drop and a small amount for taxi in, say about another 300kg odd.
The trip fuel will vary with take-off weight & wind component quite a bit, so I can only guess as the average figures.
I'm guessing about a 7.5 - 8 hour trip .... that right ?