Your 5-to-9 deserves a real verdict.
Evenings are too scarce to spend on the wrong idea. Get six honest scores, the weak spot named, and a sharper version of the idea before you commit another Saturday. Free, two minutes.
Built on the idea-scoring framework from the book Ideas That Spread. Deliberately honest: most ideas do not get high scores.
How badly people want this, how different it is from what exists, how well it fits you, whether you can reach buyers, what it can earn, and whether it lasts. Each scored 1 to 10 with the reasoning spelled out, and you can adjust any score you disagree with.
Most ideas fail from one weak spot, not ten. The scorecard finds yours and tells you the specific move that fixes it.
Your idea, rewritten to aim at hotter demand and stand out harder. Yours to keep either way.
A strong idea held back by one weak link. People feel this problem badly and you are unusually well placed to solve it, but the market is crowded with lookalikes. Fix the differentiation and this becomes a test-it-now idea.
Keep the paycheck. Score the plan.
Describe the side business and what you bring. The scoring respects your constraint: this has to work in the margins of a working week.