Lansinoh is great (and works a treat to keep your lips nice and soft, Mumsnetter tip I picked up on here!).
Normal firm foam pillow worked fine for me, still using it with DS. Use cushions to keep your back straight if you're on a sofa; you don't need to get bf chair (I found the arms always got in the way).
You can buy breast pump and keep it in packaging until you decide whether you need to use it (I got an Avent Isis from Boots, check with retailer for returns policy); or you can hire them (NCT can hire them in my area). I never got DS to take a bottle, so pump was actually waste of time in my case.
Good nursing bra - hospital I went to had lady who came and fitted them at home or in hospital, so I bought mine after DS born. If you keep going, you'll probably need to get refitted after the Dolly Parton weeks/months have ended. I got washable breast pads, but outline showed under bra, not v flattering!
Strappy t-shirt tops that unclip; you can wear normal long-sleeved t-shirt or jumper over these and avoid baring your flesh to the world/chilly winter air. Mamaway do nice ones that lift up very discretely.
Best thing will be to have numbers of breastfeeding support in your area, whether a hospital/health visitor group, NCT or La Leche League. The main thing is to get a comfortable latch on from your LO.