I think you'll really like the Tempests. I just finished assembling 2 of the three that I'm building and they sound excellent. Hopefully I'll have time to do the third tonight since I just need to connect the wires, stuff with polyfill, and mount the drivers.
To anyone else planning a Tempest build I HIGHLY recommend buying the assembled crossovers. I didn't and easily added a week to my build time since I could find the time to get them assembled. On the bright side I feel a certain level of accomplishment from tackling it myself.