The layout looks pretty solid... the only thing is the shaping of the hills are off, as well as the crest of the drop. If you're going for realism, you might want to look into properly shaping the elements. Depending on what 'era/generation' of B&M you're going for, the shaping will different; for example, Nitro vs Shambhala... Judging by the trains being used on this coaster, I'm going to assume you're going for more of a newer generation B&M hyper.
Old Gen. B&M hyper coasters have a more drawn out hill, with more of a rounded crest...
Whereas new gen. B&M hyper coasters have more of a "pointed" crest...
As for the crest of the lift...
NEW...
OLD

- DSC00580.jpg (18.58 KiB) Viewed 1434 times
Hope this helps!