Just finished reading your lessons. You have a 300 level college class on personal finance right there, not a 7.5 hour intro in high school class. You can try broad, not deep but I'd be afraid it wouldn't stick. Assume they know less than you think they know. Use lots of worksheets and personal examples for each student. Play board/card games that relate. Take your time. For high school students I'd bet you could do a complete course of your length on any one of the following topics:
1) Credit Cards - What is a debit card? What is a credit card? How do they work? What is a credit score? Why do I need a good score? What affects my score?
2) Budgeting - What is a budget? How do I make a budget? Why do I need a budget? Spend less than you earn. How do student loans affect this?
3) Taxes - Why do we pay taxes? What do our taxes pay for? What are some of the different ways we pay taxes (sales, property, income, capital gains)? How is income tax calculated? How can we influence how much we pay in taxes (deductions, credits, 401ks etc)?
4) Retirement - (this one really needs budgeting first to make sense but when taught in a mustachian way like the Simple Math of Early Retirement can really open eyes or kids and adults). Compounding interest.