Thanks for the tips. After reading this comment and some others, I think staying away from acrylic altogether is the right move, as it’s the main vanity mirror.
I got another sample from a local glass place…to cover the 60" tv, it’s ~$650 for a normal “one way” glass. Unfortunately it still lets a a noticeably less amount of light from the screen and has a bit of an unhealthy looking green tint when compared to the $1750 twowaymirrors.com vanityvision.
I just can’t believe they’re the only company making mirrors specifically targeted for this use. I guess that’s why they can charge thousands of dollars. bummer.