The table styles are very efficient. With a few clicks you can lay-out a whole table. Even paragraph styles can be connect to cell-styles.
But the are a few things to start with
1. select whole table and set rowheight in pallet table to "at least" and "3 points" (or the number the error message give to you). So you don't have overriding text anymore.
2. make a table style and a cell style that brings the whole table back to a body text like look.
3. Then make cell styles to lay-out parts of the table (like the heading and last row)
The trick is to start the right way, define your styles good and nothing can go wrong.
