Are the taxes so low that they really do free up a noticeable chunk of income?
Depending upon the state from which you are moving, the effect can be significant. Some folks may take a pay cut when they move, and actually see an increase in available cashflow because of the lower taxes.
Are people in NH much more lax when it comes to what others do?
Live free or die is our motto. There are always exceptions, but you'll find a greater portion of the population that's content to let you do your own thing than in most other places. In general, folks may actually seem "cold" because they typically
won't ask you personal questions.
I ask this question because I have read not to disclose to a future landlord or employer that you are joining the FSP. I understand the reasoning behind that but we are moving to make an impact on government and that gets done by getting the message out.
It's not a matter of hiding. It's a matter of not sharing that, initially, so they get a chance to know you as a person, first. Don't make your initial impression as "that political guy." Make your initial impression as "that guy who's always helpful and has reasonable things to say." That way, when you
do express a social or political opinion, the listener thinks, "this guy always seems to have his head on straight, so if he says that ____ is a good idea, I should really look into it."
The FSP is primarily about education. We'd need 100,000 movers, or more, in order to actually "take over" even a state as small as NH. Not going to happen, by any stretch of the imagination. The only way this whole thing works is if each mover convinces five, ten, maybe twenty or so existing NH residents to support liberty. Make good first and second impressions, so folks will listen to your opinions in a positive light. Start out by earning a reputation for reasonableness and decency and then, as someone who has moved (and probably has a different accent than "us," so that will be obvious), you're probably in a good position to comment on how amazing NH is when compared to other places. NH isn't perfect, but it's already more pro-liberty than the overwhelming majority of other places, so talk about that - most folks are happy to hear that their home is wonderful, and if the reasons you give are related to how much liberty we have, then they will draw reasonable conclusions about what makes NH so much better (if everyone compliments your garden in front of your house, are you likely to tear it out, or are you likely to make it bigger and better?).