Rod recommendations for a ultralight/light fishing set up?

I want to fish a lot of little crank baits and crappie jigs. I have tons of short crappie/bream rods (5ft) and tons of jigging rods, but no good 6ft to 8ft casting rods. I generally use 6lb Mr crappie mono.

Would it be worth buying a new top section for my medium light, 8ft russ bailey rod crappie rod? The tip of the bottom section was squished and has a small crack, but it would be covered by the connection between the two pieces.