You're not the problem.
You've just been skipping ahead.
You've done the work most people skip entirely. You know what your course does, you've validated it, you've mapped it out.
Picking a platform right now is actually the right move.
So stop researching and start building.
Come work on it with other course designers who are in the same spot. Once a month, free, no pitch. Just actual work time with people who get it.
Grab your free spot at Course Creation Coworking.
Want someone to look at your outline before you build? The outline review is $197 and gets you a full written audit before you commit to anything.