You could try the Hawaiian Islands scenery by Bill Potvin:
www.cfsops.com/Scenery/Hawaii-Scenery.htmThe location of the runways in the Pearl Harbor missions would probably not match but you could fix that with a mission editor.
The Hawaii scenery and textures from FS98 are only 4 Mb zipped if you want to try it that way.
The Abacus Pacific Theatre addon for CFS1 has Hawaiian Island scenery also.
The benefit of having this addon is that you have the proper aircraft and even battleships in the scenery.
Let me know what you're considering.
Mike