Get as much different experiences under your belt, not just C150 time burning holes in the sky.
IMC, night, aeros, formation, do a European tour, fly at charity events with sick kids, see if you can get some tailwheel time, perhaps some gliding (although gliding may not count towards your CPL).
If only, it will mean that on your first interview you've got something interesting to tell, and a logbook to back up your stories.