Do not go mental and ignore the list in the mother are catalogue. You do not need half as much as you think.
you choose a pram by taking your lifestyle and the size of your car boot into consideration! Will you be using a lot of public transport? Will you be using the car a lot and therefore need the pram to be easy to fold? How much room do you have in the hallway? Go to somewhere like kiddicare and have a look at what is available in your price range.
sleeping - can you fit a cot in your room? If so you can manage without a Moses basket but perhaps get a cheap one anyway. Where will the baby sleep downstairs? Another option is a bedside crib until baby goes into cot in own room.
muslins. These are very cheap in supermarkets. Just buy a couple of packets in advance, you may not have a sicky baby. If you need more buy them later.
i love pregnancy pillows but get the full body length! So nice and cuddly. Not useful for bf but you might not need a bf pillow, i found them more of a hindrance.
car seats. If you pop in and out of the car a lot then one you can attach to pram is handy. Newborns shouldn't be in car seats for long periods so this is not ok for a day out in the shops but fine for popping in and out of somewhere without waking sleeping baby. Maxi cosi are compatible with many makes of pushchairs. If you will not need to take the seat out of the car that much it is more economical to get a combination birth to age 4 seat that just stays in the car.
a changing mat only costs a fiver. Get one for upstairs and one for downstairs. Supermarkets all sell them. Choice of changing bag depends on your interest in handbags and your budget. I got plain black cheapo version in Asda as my interest in fancy bags is low.
i have a monitor with a nightlight which is helpful. We used to have a more expensive video monitor but it was a piece of crap. An audio one is perfectly adequate.
no need to stockpile nappies. Get about three packs of size one for the first week or so. Then you can try out different brands and see what fits your baby best. I think aldi are very good personally.
the best clothing for a young baby is vest plus sleepsuit plus cardigan if cold. I would get nine vests and sleepsuit in newborn size (up to 10lb, in some makes this is called up to 1m) and a dozen of each at the most in 0-3. You can get by with less. You will get bought cute but impractical outfits as gifts. You will probably succumb to buying a couple yourself, but remember it is mostly vests and sleepsuits you need. Two or three cardigans in each size is enough. A couple of little hats too for cooler weather. A winter baby will want a snowsuit.
other things i found useful were sling, bouncing chair, baby sleeping bags and a nice baby playgym. Also a baby bath support to use in the big bath.