I will attempt to answer some of your questions, I have a seven year old.
I never used a bassinet...my son sleep w/ me for the first two months or so and then I put him in the his crib.
I didn't breastfeed, but I would suggest tryin' the pump b/c if you baby eats as much as my son did you'll definitely be tired of flashin' your breast to feed him/her.
Have as many pampers as possible b/c they're gone before you know it.
I didn't use a changing table...the bed worked fine.
You should definitely feel overwhelmed and disorganized...no matter how much advice you receive you never know what to expect when the baby arrives.
Pelvic pressure...I had labor in my back...meaning no stomach pain b/c my son was siting towards my back.