Probably better. If I were doing it again, and I probably will the next time I wear out a blade, I would likely go narrower and longer. I'm not sure an 8" stroke would get used much, but narrower would allow it to be used in smaller areas. I don't think this would ever replace a quality set of rasps, but it is something useful to make out of a used bandsaw blade.
SR
I would go 11" or 12" with the really heavy teeth... You could go shorter as you increased the number of teeth.
How about a curved surface? Maybe one with a 1 1/4" radius and one with a larger 4" radius. That would allow you to use them for belly carves and shaping heals and other inside curves.
Those are good ideas, especially the curves. With the lower PTI counts it would probably help to put the blades closer together and stagger the points better than I did here to help close the gaps between the cutting surfaces.
SR