the flat handle is the tricky part..most heavy duty knives
have a big stacked leather handle..
i would suggest you have a look at a site that offers
knife making kits or just blades.."ragweed forge" or
"knifekits.com" and get a blade with a full flat tang that would
fit your case and put a couple slabs of wood on for the
handle..easy task..most come with pre drilled holes..
i would get a blade that is easy to keep sharp..who cares
how it would look in a survival sitution..