It is always difficult to advise on bait quantities to bring but when the carp go on the feed they can certainly scoff, so if you do hit it right you do need to allow for regular topping up of your swim. Having said that of course at other times it pays to be a bit more cautious with your feed rates.
Boilies are usually the first choice bait, and a mix of shelf life and freezer baits works well. This is often backed up with pellets. If it helps to give you a starting point perhaps 2 kilo of boilies and 3 kilo of pellets per day will give you the option to feed regularly, and keep the fish active in your swim. If you need to use it all you will have had a brilliant week, and if the fishing has been a bit slower, you can always take it home with you. Regular feeding, and occasional resting of the swim can pay dividends.