Don't use the Boots breast pads. I've found that even their extra-absorbent ones leak (or are soaked through after a couple of hours, but I make far too much milk at the moment).
Set up a breastfeeding "station" in whichever room you'll spend the most time. Choose the most comfortable place for you, and have a table with lansinoh, bottle of water, spare breast pads, muslins, snacks and book/TV control/laptop/whatever you need on it. In the first weeks you'll spend a lot of time feeding your baby so having a set area makes it easier, IME.
Work out what kind of tops you'd prefer to wear: will you lift or pull down, or would you prefer the ones designed for nursing that have concealed slits at the sides? You don't need them, but I've found them brilliant for discreet nursing in public. Took 3-week-old baby to a wedding a couple of weeks ago and had to feed her during the photos, at dinner, etc. No one noticed. But you can do very well with a nursing bra, simple singlet and a loose top that you can lift or pull down. Or shirts. With DD1 I lived in shirts (poppers are easier than buttons for a quick feed).
Cushions. Make sure you have several of various sizes. You'll probably want to try different positions for feeding.
Useful: nipple shields and breast pump (again, don't get the Boots branded ones). Both great for sore, cracked nipples. If you can afford it it's good to have them ready in advance because when you need them the good brands are never available in store.
Cabbage leaves in the fridge for the Days of Engorgement. They are surprisingly comforting when shoved in your bra.