Hi there! I currently live near CSUN (but will be going to Philly for PT school) so I can shed some light on the areas. The distance between the two schools is pretty great, and with LA traffic, you're lucky to get anywhere in under 1 hour. The Burbank area is probably about half way between the two schools, but traffic is killer at all times of the day. You definitely want to avoid living near, and traveling on, the 405 freeway in the mornings, especially southbound into the city.
Living in or around Burbank is probably your best bet. There are areas of Burbank that are nicer and safer than others though, so you want to be careful. Looking at a map, the intersection of the 101 and 134 freeways is a nice area to start looking; apartments tend to be a little cheaper but still good quality (intersection Magnolia and N. Hollywood Way is a great little area. My friend lives right over there and pays less than $800 for her own room and bathroom in a 3 bedroom place). Feel free to message me with any more questions! This is my turf 🙂