I don't personally think weight is an important one to have in a portfolio, especially as the overall distribution of fat/muscle can alter someone's appearance to quite a degree. I think individual measurements are more accurate. Plus, if a photographer wants a model to wear specific clothing they're bringing to the shoot, individual measurements are much more important than overall weight to make sure the clothing will fit.
I know that the underbust/overbust confusion can be common - I usually assume "chest" means underbust and "bust" means overbust. The chest and cup measurements together should give an idea of the bust size, so a separate bust size isn't always needed. And with waist, a lot of people think your waist is lower down than it is, so the confusion can just make them give up.
Some websites will have a "how to measure yourself" section (or notes in the profile editing section) for models and photographers to refer too. I can't remember if you have one here or not James, but maybe that would help models feel more confident about measuring themselves?
Anyway, I think the measurements called for here are fine.