To balance are not to balance

I'm building a 360 for my valiant. pretty mild build, 4 barrel ,cam, headers etc. I already have a short block, but I dont think its been balanced. My old buddy who is helping me put this thing together keeps insisting I take it apart and have it balanced. Now I know that balancing and engine has many benifits.
Other than the longevity of the motor. On an engine that wont see over 6000rpm. Is it really worth it?