New & would like advice on adoption

Hello everyone! I’m new here but not to guinea pigs. I’m a veterinary nurse, so I work with pigs and I’ve always had them! Right now I have a single female English crested who’s a year old. I recently adopted her from a family member. The family member did have another piggy with her who passed away, they didn’t want to get another pig so they rehomed her to me knowing I would gladly get her some friends!
she’s a very sweet pig who does great with others (we have had a few play dates and they go great!) anyways….here’s where I need advice. Tomorrow I’m adopting (free of charge) three young bonded females from a family about an hour away from me. Mind you I’m 29 and the piggy’s I’m getting are from a family with kids. They come with a tiny horrible pet store cage also for free. Feel free to disagree, but I strongly feel like guinea pigs aren’t for kids. This family made the post to rehome saying they don’t have time to give them care anymore. This is such a typical thing I see everywhere, where parents buy them for kids and rehome them soon after.
I made arrangements to pick them up tomorrow and today the Mom asked if they could visit the pigs sometime because her kids would miss them. I’m a people pleaser, so I texted back and said “yeah sure! And I can always send photos too!” I’m regretting this. I do not want them to visit. But I will gladly send photos if they would like. My husband is also not ok with a family we really don’t know coming to our home to visit pets that they couldn’t care for. We don’t know them, just because we’re taking their piggy’s doesn’t mean I want them to visit, ever. I said sure, so now am I really going to have to let them in the future? Or if it ever comes up, can I make an excuse? Can I just say no? Should I not adopt these pigs and find others? Help!