Ideal way to show multiple columns in an input table for keyboard navigation

I have a page as below.

I have to show table with multiple input columns(> 30). in the region "input able with many coloumns"

One Idea is have arrows on right and left and navigate.

Another is have bread crumbs on top and use accesskeys to slide the columns below.

But with both the above the region seems cluttered.

The Meta data on left consists on simple stats like Sum, Median. I am thinking of collapsing it but the table has to be shown as it gives an insight needed for input.

The Region on the left is a master region. For which Sub-Region is like a Detail.

How should I Arrange my regions? Or what way to follow to have the input table not cluttered and optimized for keyboard navigation