sandblaster or wire brush + rust neutralizer?

I will take some pictures this weekend. There are definitely some holes in the floor - but I can't tell how large they are without taking a second look. A friend at work told me about the amount of dust created by a sand blaster - so that plus dano's comment above have convinced me that I should forget about sandblasting inside the car. The holes are pretty bad - the floor was wet for months while I let the car sit in the yard while water sat under the vinyl floor mats. I definitely need to replace the metal sometime - I just know know how much $$ to spend on that vs getting the exterior in good shape first.