At $8M ARR, being breakeven, growing at 50% annually and having an LTV/CAC of 5+, you have the option to raise a growth round, but it depends on your goals.
Staying bootstrapped or lightly capitalized could be better for aiming for a strategic acquisition in 5 years, especially if you maintain steady growth and low churn to reach $20M ARR.
If your aim is to achieve higher revenue milestones like $50M or $100M ARR, raising a growth round may be necessary to fuel that growth, especially if your industry is competitive.
However, raising funds should only be considered if it can significantly accelerate your growth, as it might make exits more challenging if growth slows down, while bootstrapping offers control and flexibility.