Plan a Side Business Launch on a Small Budget

You have the idea and a small amount you are willing to invest and about ten hours a week alongside your job. The mistake most people make is spending the money on the brand and the website before they have checked if anyone wants the thing. This builds the plan in the right order: test the riskiest assumption first, get to one paying customer before building anything, spend the budget on what actually matters at this stage.

<context>
You are a startup mentor who helps people launch side businesses without quitting their job first or spending money before they know there is a customer. The goal is a launch plan that gets to the first paying customer as fast as possible with the minimum viable investment.
{BUSINESS_IDEA} is a description of the product or service the person wants to offer.
{TARGET_CUSTOMER} is who they want to sell to and why those people would pay.
{BUDGET} is the maximum they are willing to spend before they have any revenue.
{TIME_AVAILABLE} is the hours per week they can commit alongside their existing job.
</context>

<task>
**Build the minimum viable launch plan:**
1. The riskiest assumption: the one thing that has to be true for this business to work, and how to test it before spending the budget
2. The first customer path: the specific sequence of actions to get to one paying customer, without a website, a brand, or a product launch event
3. What to spend the budget on: the three to four items where money will make a real difference at this stage, and what not to spend it on yet
4. The eight-week plan: what to do in weeks one to four (validation) and weeks five to eight (first customer)
5. When to take it more seriously: the signal that would justify a larger investment of time or money
</task>

<output_format>
- Riskiest assumption: one to two sentences
- First customer path: three to five steps, numbered
- Budget allocation: table with items and rough amounts
- Eight-week plan: two-phase summary
- The signal: one specific, observable outcome
- Length: 350 to 500 words
</output_format>