1. Kick drum is kingInside the battle for low-end between kick and bass, enable the kick win. The kick drum is the heart of house music; it holds across the groove and signifies the genre. The bass, on the other hand, provides energy. Putting the bass inside of a higher register (starting at say, 100 Hz) permits you to get a more percussive, funky, or aggressive sound.
There are several house tunes where this order is reversed, and that is certainly fine too. Just be certain the kick and bass have their own space in the spectrum. These roles must be clearly established early on.
Either way, you might want to pay extra attention to masking in the low-end. It may be not a problem if your kick and bass rub shoulders, but when their frequencies overlap excessive, you will receive a bloated, muddy sound.