I had my third baby at home and it was one of the best experiences of my life. I knew from experience of my first two babies that I have quite long, slow labours and I felt I'd be more relaxed at home.
I decided on a home birth at 34 weeks. In fact it was my midwife who suggested it. Some of the key points in my decision to have a home birth were that I'd had a normal delivery with DC2 previously, I'd had three uncomplicated pregnancies, I was full term & not overdue, and I was only five minutes away from the hospital if necessary.
It was great, five hours from start to finish (which isn't quick for a third baby) and totally uncomplicated. I had gas & air, which ran out just as I got to the pushing stage but by then I was so high on endorphins I didn't need it. It was perfect, and I loved being in my own home. I didn't bother with a pool as I hadn't used one in either of my previous deliveries. Oh, and it wasn't in the least bit messy.
I would agree about the need to remain flexible. As it's your first baby you just don't know how it will go. I totally underestimated how painful I would find labour the first time round, and after hours of it I was begging for an epidural - which led to a forceps delivery of DC1. I couldn't have managed at home.
With DC2 I didn't feel confident about a home birth because I hadn't had a normal delivery with DC1. However, the hospital birth was straightforward, just long, and I managed the pain with just gas & air. I did need a lot of stitches though, which couldn't have been done at home.
I wouldn't have felt at all comfortable having my first baby at home, but that's my personal view. If it's right for you, that's great. But keep an open mind and go with the flow.