All I have to add to what others have said is hard wood will be harder to work. Planing and sanding will be more difficult and take longer. Otherwise, go for it.

> I am half way through with my first stitch and glue and I am
> eagerly looking forward to a strip built. I have access to as much
> free red oak, white oak, popular and gum as I need. Are these woods
> usable in strip builts? If not why not? What would happen if I used
> them?