Just a quick addition before I give a longer reply (which might take a day or two): apologies if I came across as brusque; I was trying to give my unmediated reaction because I figured it'd be a more accurate simulation of how smart Catholic readers would internally react. In a different context I wouldn't have e.g. just glossed over the fact that you've been thinking about these issues in good faith for the last two years or so.
Edited 3/4/2012: I shortened up the summary a bit and add the following update:
Thanks for the lively comments. As a preliminary summary of things I've found quite useful/helpful:
It's almost one year later, and I've finally made tangible progress on some of the input suggested in my post about being non-religious in a primarily religious environment. That is, I have a near-final draft of a "coming out" statement I plan to share with a majority of those who know me.
I was involved in two religious communities for about six years of my life (SPO and CCR). Two years post-deconversion from Catholicism, many of them still do not know I no longer believe in god. This can make for awkward interactions for myself, as well as for my wife, who's still a believer. She thought it would be helpful if everyone was on the same page, as did I.