To pick the customer acquisition channels that you're going to focus on, work backwards from your customer. Start with this fundamental principle: Make it easy for your customer to buy your service. Behind that, align your customer acquisition, pricing, and growth strategies.
The Point Nine Capital team put together this infographic that provides a great framework for thinking about this alignment in the context of building a big, $100 million ARR business. It starts with the customer type—what it calls an animal—and asks, "What animals are you hunting?"
A common trajectory for self-serve SaaS is that they head upmarket to find growth. That means transitioning from hunting mice or rabbits up to deer or elephants. This framework will help you think about what changing your targeted customer means for evolving your entire strategy and organization.