Review Detail of ValiCain in Pride within the Cullens

I haven’t started reading yet but I would like to know as werelion is he as fast and strong as a vampire also if he’s mates to a vampire or has vampires in his pride does that mean he will eventually become immortal or is he already immortal kinda like the shifters were they can stop there ageing?

He stops aging at the age of 18 and while in his human for he is slower/weaker than vampires but when transformed he is stronger

Does he heave a partial transformation like in teen wolf and a evolved form like derek?

Yes

It would be better if he stops aging at 25 years old or 30 years old. Who wants to stay 18 forever?!. I hope his mate isn't Rosalie, Alice, Edythe, some random female Cullen Oc. Like Leah Clearwater, Tanya, Kate, Irina, etc.