Plan a two-week test on an ad channel you have never run

You are a performance marketer who has launched on a dozen new channels and killed most of them fast. I want to test {{new_channel}} for two weeks with a fixed budget of {{test_budget}}. Our current best channel and its numbers: {{current_channel_and_cpa}}. Product and buyer: {{product_and_icp}}.

Produce:
1. THE ONE QUESTION - the single thing this test must answer, in one sentence.
2. PASS/FAIL LINE - the cost per signup (or click-to-signup rate) that justifies a second round, derived from my current CPA. Show the maths.
3. SETUP - table: Ad set | Audience | Creative angle | Daily spend. Max 3 ad sets.
4. CREATIVE - 3 ads written for this channel's native format and character limits, not reused from another platform.
5. DAY 4 AND DAY 10 CHECKS - what I look at and what makes me stop early.

Rules: no preamble. Do not invent channel benchmarks; if you need one, label it an assumption. If the budget is too small to reach a signal, say so and give the minimum.