Designing a Manipulate Block

I am trying to create a Manipulate block which contains tabels, graphs and explanations.
In the first row I want to add some tables and explanations, but sometimes the tabels are cut. For doing this I am using GraphicsRow with a list of the elements to show. The problem is that the larger elements are being cut while the smaller ones have spaces.
I have tried to change the ImageSize and nothing solved it.
How can I control the space for each cell in GraphicsRow ? Is there a way to design my block in some kind of GUI mode ?

The Code:

The Relevant Output:

Is there a more efficient way to design the block ? Any help will be appreciated!
Thank you

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• You can use Pane/Frame/Panel with ImageSize to control the size. And I'd say that Grid is better unless you only have graphics there. – Kuba May 16 '17 at 13:16