anything surf related so do the ballast upgrade.
screen- how long are you going to keep the boat. 2 years? get the upgrade. 10 years? skip if you don't see the value in it.
just like cars, as boat tech improves, everyone wants the latest and older tech doesn't matter. no one cares if a '15 hyundai has the smaller or larger screen as it won't affect resale. a 2020? different story.

the stuff you are getting all look like options we would check off and we would skip headlights.
storage stuff is a personal preference. sliding seat is a don't care for us. never used it in the couple boats that had it.

good luck and post up pics once you pick 'er up....