Two Part Scenario Advice

[suburbaknght]

One of the things I love about LNoE is the narrative that builds throughout the scenarios. I'd like to create a scenario that takes advantage of this by retaining memory through the game. I have no idea how to go about this. Any advice on design would be appreciated. I'd like the game to include the following elements:

Part 1:
- A get out of town scenario such as Escape in the Truck or Run For It.
- Utilizes the Experience system from Timber Peak
- Can only play Non-Timber Peak heroes
- Board built with non Timber Peak tiles.

Part 2:
- About building a safe place. Reinforce buildings, locate food supplies, find survivors, or something similar.
- Board changes to Timber Peak. Only Timber Peak tiles.
- Heroes retain any equipment or special abilities from Part 1
- Anyone playing Sheriff, Sally, or Jake switches to the experienced version
- Replacement heroes can only be from Timber Peak



Questions
- How do I balance the fact the heroes will start stronger in part 2? What should the zombies get to offset this advantage? Should it be a total number or dependent on whatever strength the heroes go in with?
- What are good goals for part 2?