When applying for a small business loan, there are several factors that lenders typically consider to assess your eligibility and the viability of your business. Here are some key factors to keep in mind:

1. Business Plan: As you mentioned, having a compelling business plan is crucial. It should outline your market research, target audience, competition analysis, marketing strategy, financial projections, and how you plan to repay the loan. Make sure to highlight the unique aspects of your mini golf course and how it fills the entertainment gap in your town.

2. Collateral: Collateral provides security for the lender in case of default. While you have some collateral in the form of your house, car, and cash/investments, it may not be sufficient to cover the entire loan amount. Lenders generally prefer collateral that is easily liquidated and has a stable value.

3. Creditworthiness: Good credit is important when applying for any loan. Lenders will review your personal credit score and credit history to assess your ability to manage debt responsibly. A strong credit score demonstrates your financial reliability and increases your chances of loan approval.

4. Financial Statements: Prepare detailed financial statements, including your personal income statement, balance sheet, and cash flow statement. These documents provide a snapshot of your financial health and help lenders evaluate your ability to repay the loan.

5. Experience and Expertise: Your business degree and relevant experience will work in your favor. Highlight your skills and any previous experience in the entertainment or hospitality industry. This demonstrates your ability to successfully manage and operate the mini golf course.

6. Market Analysis: Your research on the local market and the demand for family entertainment options is valuable. Include statistics, demographics, and customer surveys to support your case. Show that there is a strong market need and demand for a mini golf course in your town.

7. Relationship with the Lender: Building a relationship with the lender can be beneficial. Approach local banks or credit unions that have a history of supporting small businesses in your community. They may be more inclined to understand the local market dynamics and consider your loan application.

8. Personal Investment: Lenders want to see that you have invested your own money into the business. Your $150k in cash and investments demonstrates your commitment and reduces the lender's risk.

9. Loan Repayment Plan: Clearly outline how you plan to repay the loan. Provide realistic projections of revenue, expenses, and cash flow. Show that you have considered potential challenges and have contingency plans in place.

It's important to note that each lender has its own criteria for evaluating loan applications. It's advisable to approach multiple lenders and compare their terms and requirements. Additionally, consider seeking advice from a financial advisor or small business consultant who can provide personalized guidance based on your specific situation.