Here's a compromise for the blind/semi blind/open debate
Run half the wines open, with talking encouraged (this will help people get into the swing of it)
Run the 2nd half blind, with talking encouraged only after a couple of minutes of consideration and note-taking
Wait until the end of the tasting before gaining views and if there's disagreement, mention that there was on this forum as well! Use the feedback to decide whether to run it blind/non blind open discussion/delayed discussion. If need be keep a balance of methods going forward e.g. always a blind wine where those with a more competitive spirit can have fun seeing who gets closest to what it is. Even for open wines, it's instructive to get people to guess price (a far better rating system than any score out of a 100/20/10/whatever).
On pours, we usually like to do healthy pours but still leave a significant remainder in the bottle to return to later (useful for a wine that seemed closed, or to compare two wines side by side). This latter phase is a general free-for-all after all the wines have been tasted and often accompanied by food. This seems to work well with 6-7 people, but could stretch to 8. For 10, you should be able to stretch the bottle easily (75ml is easily enough to taste), but it does restrict the possibility of returning to a wine later.
- pen/pencil for each person (some bring their own, but have spares anyway
- Wine listing if open, blank template sheet if not. We go for a simple MS word table design listing Wine details on lhs with a column each for eye, nose, palate and sometimes other comments or summary. The sheet also works well as a white background for eyeing the colour.
- spitoons (not necessarily for spitting, but also for emptying excess and rinsing glasses if needed)
- glasses (we use iso's)
- ice-bucket for whites (as when you return to them they may have warmed too much - we use a household bucket)
- decanter(s) if wines are likely to throw a sediment
However there's something that confuses me in your plans - how exactly do you expect to keep 10 new-yorkers quiet for more than a few seconds?
Seriously, best of luck. We've reached a happy compromise with a wide mix of experience. The first stage is semi serious (we'll chat mainly about the wines) and then with the food and repours, the conversation drifts hither and thither, only returning to the wines if someone sees a significant change or just wants to re-affirm their undying love or deep-rooted dislike of an earlier wine. It's nice to escape geekdom to convince ourselves we're not complete anoraks! We've become friends through the winetasting and friends do want to talk about other stuff.