You may not use all of your hexis - assume you will have some which just don't do anything for you. If you don't like the way the colors are playing out, or where some of the leftovers are supposed to go, maybe you should loosen up the strips (that's a euphemism for RIP OUT - LOL) so you can play around with the whole thing? Maybe you were going to use some of them in one of those helf-hexi borders, or do a big border and float a few of them in the border?
Do you have the OBW book? It can give you come cool ideas about how to finish it off with pizazz.
Good luck and more power to you - it is a daunting task indeed to take up something after so long. I salute you! (my UFO's are growling at me and scoffing at me from the bottom drawer...)