I opened a trading account and am planning to invest $3,000 per month. My plan is to allocate 20% to blue-chip stocks like Apple (AAPL), Tesla (TSLA), and Amazon (AMZN) and 80% to a VOO. Is using dollar-cost averaging (DCA) a strong strategy for long-term investing? Alternatively, do you know how I may strengthen my portfolio for higher returns? Thank you.