how to edit (8mm) bmp-sequence?

Hi,
I need some help with the editing of a 8 mm film. We shot the whole film with 8 mm camera's and digitalized the footage.
Now it's a bmp sequence, but i don't really now the best way to approach it in Final Cut Pro.
Someone tolled me you should edit with a converted smaller sized copy and once finished apply your project on the real master footage.
Does anyone have experience with this?

I do not think that the old 8mm film is a rewritable, so I wouldn't recommend. Most of the films is available. It was not until the discs or DVD does not receive any visual material re-recorded.