Is incorporating Hololive characters into the date too weird?

Pretty much as title says. I (25m) have been seeing a girl (23f) for just over a month. We have been on 3 dates and things are going well. We have good chat, which includes private jokes. One of these jokes centres around our mutual love of Hololive (not going to get into it) which gets referenced a lot. Anyway, my plan for our next date is to take her to dinner at one of the nicest restraunts near us, followed by walk down the riverside. I have a 10 year old nephew who is also local to the area. After dinner, when we’re on our walk, I want to (with her parents permission) get her to dress up as Uruha Rushia and approach us at ‘random’, demanding to have the “rabbit” (the girl im seeing). I will then pop my Korone cosplay on and swoop in, crazy dog lifting her (Pekora) away from her (Rushia) and roaring “what are yee doin with ma rabbit?” (part of our private joke) in my best Korone voice. I may also bring a few dog snacks in my rucksack to chuck at her for further comic effect. I excitedly told my friend about my plan the other day and he had his concerns :/ Is hololive role play really that weird? It is our 4th date?