I've got a case of the same drivers and I'm thinking TL, which could be real interesting. With so many excitation points along the line you could end up with something that works really sweet, or really crappy, no way to tell till you build it. But for simplicity hard to beat. If it doesn't work just plug the hole. I also have a bunch of the $.59 tweeters to toss in there too. I use this site for crossover values: