My fiancee and I are young, not especially high-income, and ethically nonmonogamous, and we're brainstorming ways to involve her boyfriend
in our small ceremony. I'm thinking our ideal guest list would be, at its biggest, eleven people plus us and the rabbi (including FI's BF), out of whom five would largely be invited because they're our close friends' SOs and it'd be weird not to invite them, one has an unfortunate habit of trying to bring up Israel to FI as if she's responsible for whatever they've done now (FI's ethnically Jewish, I'm converting), and one more is deeply uncomfortable participating in any sort of religious ceremony.
The obvious solution is to have FI's BF be one of the chuppah holders, but I'm not sure we'll have three other people who'll be up for filling out that group. Does anyone have any other suggestions?