DH and I were just talking about this (yet again) last night.
Birth date: Due March 1. I keep telling everyone "early March" (only a couple people know our "actual" EDD-- I don't want people harassing me, LOL.) My guess is something like March 7, with a range of maybe 3-4 days either way. It's my first, so who knows?
Sex (if unknown): No clue. DH admitted he thinks boy, I am getting boy from a few people... But also girl from a few people. I am more prepared in a weird way for a boy b/c I have a preference for a girl, but I "know girls," so I have had to do more research on boys (caring for an intact boy, aiming a boy with EC, LOL, that kind of thing).
Weight: Given family history, I think the good money is on 7 and change. Anywhere from 7 to 8 lbs. I could see more, even up to high 8s. I don't see less, even though DH's family was all 6+-- my theory is that partner's family's "baby size" genes don't come into it much.
Labor length: I am prepared for a longish labor. 15 hours, say? 12-24 range? If it's shorter, then that will be nice, because I already assume it will be longer. If it's not rough, then I'd actually prefer it not to be "too" short, though! I mean, ask me later, LOL... But if it were less than 6 hours, IDK... Seems like it would feel almost overwhelming in a different way.
Other random thoughts/feelings/premonitions about your baby or birth:
I can really see it going so many ways. Though I do get some peace that I think... it might be very hard/challenging, but I think it will probably end at home, as planned, with no major drama. I expect to end up going to a similar mental place as I did during my marathons, but am really open to anything.
As far as baby (this is what we were talking about last night), again, the "good money" is on brown eyes and (probably dark) brown hair and a medium brown complexion (well, eventually-- Buko will surely be lighter at birth). A good chance of a lot of hair from birth. Probably eventually short and stocky as an adult, though we always joke we'll have a skinny 6+ footer (we're 5'2" and 5'5", both very muscular and/or "curvy"). I also assume Buko will be fairly "colicky," since I was... and just so if s/he isn't, well, bonus!
ETA: Oh! I did have a major prophetic dream about Buko before I lost my first (last) pregnancy, which I believe in as every pre-birth aspect has already come true. The main post-birth stuff in it was that s/he will live and be healthy, and will look like DH did as a baby. I know you'd ask, "Well, does that mean Buko is a boy?" but I was somewhat lucid in the dream and asked G-d that, and G-d said, "Not necessarily, I'm just saying s/he will look like DH." LOL, so there's that. If so, I couldn't really ask for more-- DH is (IMNSHO) extremely handsome, and was possibly the world's most adorable baby.