I used EZ wire on an older car, a '68 Nova. One thing I was glad I did was save the half moon connector on the chassis side out of the steering column. The EZ wire kit connector was different and had no adapter that was even similar, it was a useful reference for matching wire color for parking and turn signal wiring. A newer vehicle kit may contain the correct connector. Just a thought that might help you later on.
It all looks pretty intimidating right now, but it's not that bad, good luck.