I really concur with what others have said here... especially regarding these two things:
1. Please get your bun spayed before you bring another one into your house. Get to know her well, spend time with her, let her grow up.
2. Personality is everything.... really. Looks can be fleeting - and deceiving.
If I were in your shoes, here's what I'd do:
a. get your current rabbit spayed.
b. Hold off on getting a 2nd rabbit until your current bun is fully mature. It takes time for them to get through their crazy "teen" stage, and there are no shortcuts.
c. Adopt a nice adult rabbit with a good, friendly personality, preferably a neutered male who is past the teen stage - knowing that he might never bond with the other bun you've got, and with the clear understanding that will provide him with separate housing and just as much care and love as you give to your current bun.
Rabbits are intelligent creatures with strong personalities, likes and dislikes. Before i adopted my bun, i had several conversations with shelter staff about the personalities of various rabbits, and what I was looking for. They were immensely helpful in this process.... And a reputable breeder should be able to assist with this, too. But nobody can guarantee what a baby rabbit will be like as an adult - and there is no such thing as a perfect rabbit.
I honestly believe you and your current bunny will be a lot happier - and better off - if you just focus on her for now.