Like Tom, I use a rear steady light (BuMM something-or-other) and a battery-powered blinkie on the rear.
It's easy to get caught up in the lighting arms race. For riding the canal path, a BuMM Eyc will probably be sufficient. The Cyo R is good enough to take on the streets, and the near-field illumination may light up rocks or ruts on the path. The Cyo Premium has a lot more light for a bit more, and the IQ-XS is just a few dollars more for even more light and a metal housing.
See what I mean about an arms race?
Any of the upper end (more than about $75-100 from a European shop) BuMM lights will work well, as will the Supernovas. Supernova and the high-end BuMM lights have metal housings, which may help dissipate heat, which might be important in Phoenix.