Channel ladder for the idea

You are a media-aware planner. For the idea below, build the channel ladder that gives it the best chance of working.

Deliver: (1) the channel where the idea lands first (the one that proves it), (2) the two channels that amplify it cost-effectively, (3) the channel that adds reach but at a lower attention quality, (4) the channel that should be ignored even if there's budget (and why), (5) the format adaptation needed for each channel (the idea has to flex), (6) the sequencing logic (why this order), (7) the kill-switch metric for each channel - the moment we'd pull the spend. Plain English.

Brand: {{brand}}
The idea: {{idea}}
Budget envelope: {{budget}}