That's not too big. And females, in general, are significantly smaller than the males, of course. Bear is a great looking bully but I don't think he's super big.
I say that because Linus (the handsome devil on the avatar photo) was 60 pounds at 7 months. He topped out at 80 pounds - and has even gone over that but he did lose some weight - but he is considered a very big bulldog. He's long, stocky, and, in all honesty, sort of tubby. But we're trying.
My other bulldog, Bentley, was a very nice sized bulldog who topped out around 62 pounds and wasn't considered a big bulldog.
I love me a big bulldog though. I'm looking forward to seeing more of Bear. I found that my bullies didn't really "fill out" until about 18 months old.