By the way, you can generally buy s sheet of 18 ga 4 x 8 sheet flat stock for $60. You can easily fab those patches with simple tools. Takes a little thinking and time but you will also have metal you can use to patch the floors with also.
Don't think any problems on the floor pans. Cars don't rust through around here unless left in the weeds, we live in pretty dry country. The rust holes seem to be about fifty cent size
