I also like Pereira at even or + odds.
Mizuki's lack of physicality is going to be a problem against a tank like Pereira. Unless Mizuki can land clean punches early, I think Pereira can walk through most of her striking offense and land her heavier hands. Strength wise, I don't think Mizuki can take Pereira down. Pereira made a girl as strong as Suarez work for takedowns. I don't see Mizuki getting her down unless she gets ultra creative. Mizuki herself has poor TDD and Pereira would be smart to win rounds with late takedowns, but I doubt she even tries.
One thing that's a mystery is how many changes Mizuki has made to her game since training with Serra Longo. I think it was obivous to everyone that Mizuki and her brother were limited by their small Japanese gym (literally the smallest gym I've seen in terms of floor size). I don't think she can overcome her physicality issues within 3 months, but she might come out more slick and with a more put-together game.