Hi Alex,
That’s probably not we’ll support, as the two settings are somewhat in conflict:
Setting tweet limit is a device to set the height of the widget to a fixed number of Tweets (which are variable in height, depending on the content), whereas the height parameter fixes the widget in terms of pixels, and scrolls any number of Tweets within the space.
If you want to set the widget height in pixels, you can just do so and the full timeline will be scrollable in that space.
Ben