"Being a mother is like being pecked to death by ducks" - Some mother
My youngest is 5 now, and I don't really remember much what it was like to be pregnant, except being really uncomfortable all the time towards the end.
If you are going with midwives, may I suggest that you still familiarize yourself with what would happen if there were complications. I didn't want a hospital birth for the same reasons as you, but BOTH of my sons had complications and I ended up having my world turned upside down right at a time when I was the most stressed and in the most pain.

If I had at least toured the hospital or prepared a little bit for what could happen I think it would have been easier.
The worst thing about having a baby is that you don't get much sleep for the first year. And lack of sleep makes EVERYTHING seem worse. (at least for me) That is honestly the number one reason I won't have a third... It's just too hard for me to function without sleep. Having people come over and watch the baby while I slept was the best way they could help me... so if you have chatty friends who want to hang out with you, they aren't the best resource. At least that was my case.
The toddler years are hard because they are so curious and into everything - so I would baby proof your house now and buy some gates to cut down on the stress. It's amazing how fast they start walking, climbing and pulling books off the shelves. I used to think I was a slob, and then I had kids and I can't believe how easy it is to clean up after just myself now. So... if you have clutter and are messy, I would throw out or store as much as you can.
The best advice I can give to a new mother is to start talking to your baby as if it understands you as soon as possible... and explain everything you're doing and even why. Also, consider reading up on sign language for infants... they can learn to sign months before they learn to speak. This makes a huge difference in how you feel about your baby and will help him absorb so much more information.
Children are way smarter than people give them credit for and both my kids have amazed people with the complicated concepts they understand... I'm sure it's because we talk about complicated concepts all the time, so they're used to it. (see my teaching my son to look for hints thread for examples)
But - beware... talking to your son early might turn him into a curious little question machine. *L* I actually love it when my kids want to understand the world, but at the same time it wears me out sometimes and I have to give them a 20 question count down to 'no more questions' time. I tell them that Mommy's energy is limited and it will run out, so make sure your next 20 questions are really important, because after that, I'm done, and I won't answer anymore.
Things you can live without that everyone seems to think they need:
Diaper changing table - a pad on top of a dresser that's the right height can serve as well
Diaper Genie- more trouble than it's worth - just throw them in the kitchen trash and take it out every night.
Baby Oil - for use on what?
Stuffed Animals - one or two tops... and preferably small washable ones. My kids both have dust allergies and we had to get rid of all those big, expensive wild animals because they collect dust and are a pain to wash. And my kids never played with them anyway.
Noisy toys - if it's loud, it will annoy you eventually.
Things I found very helpful:
Pack n-play - portable playpen and 'cage' for when you need crawler to stay put or to be safe from larger children or pets. Don't put a toddler in it, they climb out. (at least mine did)
Bouncer - any type of moving seat thing that comes with toys. Both my kids loved them and gave me a break from holding and playing when I needed it.
Monitor - babies sleep better when they can't hear noise, but then you have to be quiet... unless you have one of these...
Gates - as mentioned above. Chairs on their sides do not work as well for climbers.
Legos, wooden train set, ball/marble runs (size depending on age), and any toy with wheels (no need for a track or remote control). These are the toys that my kids still play with while the others have broken or have been forgotten.
Being a mother has made me realize things about myself, and the depths of love that I am capable of that I never would have imagined ever. It's hard, and you have to expect to sacrifice, but it's amazing... I still sometimes just stare at them, my heart pounding and feeling fluttery in my stomach because I love them so much.

(and then sometimes it's like being pecked to death by ducks...)