Took a quick look, it looks fine.
1) you can use the CMP during upgrade.
2) EPLD image is the microcode for the line cards. It enables new features support for the hardwares. EPLD is not ISSU and it is discruptive (minimum downtime per module is ~15 min). If you can upgrade it, it will be great. If you cannot affort the outage, you can be leave it alone.
HTH,
jerry