I'm a late entrant to Love Live! fandom, myself. I've only been a fan for about... 14 months, I want to say. But if there's 5 already, chances are there's probably 1 or 2 more that you're not aware of.
Solution: Expert level crossplay. Shave, do your hair and makeup, wear a wig. A cover thingy for what's between your legs. So on and so forth. That'd require a lot of time, money, and effort to work, though, and your friend group may be weirded out.
I think I do remember you saying you had a Honoka figure...
... and you reminded me that I do, in fact, possibly have 4 full size Nicos myself. Snow Halation, Picnic ver, and an SH figuarts version I have for sure. OH! And a first fanbook version. SO I DO HAVE 4. Or was it 5? I dunno. I'm not good at tracking these! Plus a couple petite nendos as part of a pair of petite nendo sets for Love Live.