Ohhhh, he sounds adorable. Be careful though, he might get tooooo friendly with your arm or leg if ya know what I mean. 
There is this adorable bunny extremely friendly bunny named Dudley at savebunny.com. How you describe your new bunny reminds me of Dudley. At first I thought it was because Dudley wasn’t neutered, and he also sprayed, but then, just a couple of weeks after surgery, he was no longer spraying, and now it’s been well over a month after surgery and he is just soo friendly every time I go there. He is desperate to have love and affection, and every time I reach into give hay and clean, he ignores his fresh food for instant love and kisses. When I walk by the cage, he follows me within his cage and presses his nose up close.
I’m so glad you were able to adopt your new bunny, and it sounds like your girls aren’t showing any aggression. If they show even disinterest, ignoring and such, that’s a good sign too!.
Good luck!!