I've got a room with vinyl flooring that has been there since about
1978. I went to remove it, and it looks like the floor was floated
before the vinyl floor was installed, but I scraped up some of the float
(just a patch about a square foot in size).

I'm thinking about putting in a wood floor, and am wondering whether I
should remove the vinyl floor, or just lay down wood on top. Any
thoughts on whether the vinyl should be removed first, and whether the
floor needs to be refloated under wood?

Also, this room has direct exterior access. Is a wood floor (not Pergo)
a good idea, or is it likely to show wear near the door? What about
that bamboo flooring that seems to popular right now?

Thanks.