Sounds like you have the steps figured out, roughly speaking - that is it. Of course, there are tons of details that you’ll want to do right regarding each and every one of these steps. Basically, so many, that each could be a separate post. But I am not worried, I see you started with research so I believe you’ll figure out the details along the way. Only one thing I’ll mention - your target audience. Hope you checked where they hang out in large numbers (which social media platform, I mean) because you can have the best marketing campaign and it won’t do you any good if it doesn’t reach the right people. Good luck with everything, you can update us at some point, hopefully with great news you’ll have to share.
I couldn’t agree more, works better for me to have a few tools, each one a great fit for its own aspect. The way I organized it, there are integrations offered so that I can connect all these tools and keep track. But all-in-one, not really my first choice.