Glad to help! Like I said, you'd probably be fine anywhere in Massachusetts -- homophobia obviously exists, but it's not enshrined in law and it's not a prevalent attitude.

Boston unfortunately doesn't really have a true gayborhood, but Jamaica Plain is a hotbed of married lesbians with kids. Somerville and Cambridge are super queer friendly (and actually legally recognize polyamorous marriage, to give you a sense of the level of general/structural support for 'alternative' family arrangements). Unfortunately, a lot of those places are fairly expensive (b/c they're on the big transit lines), but I also know a couple gay couples w/ kids in Hyde Park, which is still part of Boston but less connected to the rest of the city by transit.

Welcome, fellow queer. Greater Boston is, in general, super gay-friendly, but I'd recommend Malden, Arlington, Medford, and Somerville over any of the south shore suburbs. I lived in Quincy for a bit, and the vibe wasn't exactly hostile, but I almost never saw pride flags or visibly queer folks out and about and there was a fair bit of Q-aligned graffiti.

I'm trans and generally pass, but I was always a little nervous if I went out dressed at all GNC in Quincy. I never got harassed, but I never felt entirely comfortable in my own skin.

I'm up in Camberville (Cambridge + Somerville) now and it's a lot more comfortable to play around with gender expression. Quite a few queer-owned businesses in the area, too!