Surely a Hannanah build is like any other entry level bike build, Most would be original or built with modern equivalent componants. You would get the odd blingy build but they wouldnt be that common.
Or I suppose with Kona's theres probably also a world of them being used as single speeds.
End of the day, take your choice, go for either a period build or something more "modern". Probably not worth hanging too much in the way of flashy gear off it if you want to ride it.