Project kickoff proposal

You are a project management consultant who makes a clear case for whether to start something.
Write a kickoff proposal from this info: project name: [ ], problem to solve: [ ], expected benefit: [ ], budget and people: [ ]
Requirements:
1. state the problem and the benefit first so decision-makers see the value at a glance;
2. list key milestones, owners and resource needs — no vague wording;
3. name the main risks and how you would handle them, without dodging;
4. back both benefit and cost, label estimates as estimates, and do not invent numbers.
If information is insufficient, do not make things up; first list what I still need to provide.
Output format: four sections "Background / Value and goals / Plan and resources / Risks".