I create commercials and short films for companies that want to tell their story.
I have always loved these "rules" and obviously Pixar is the gold standard of story. I actually incorporate a lot of these in my writing process - https://youtu.be/1tSKpwBww2g
I'd say a storyboard is not NECESSARY, but super helpful if you have specific "beats" or compositions that you need to hit. It is a really good idea to plan complex movement so that you don't have to think about where to go and can focus on execution. But, I guess that doesn't have to be a storyboard. Robert Rodriguez is said to have storyboarded his movies by filming one version on a phone first, then during the actual shoot he knew what to do and could focus on doing it well.
I don't know how your personality works, but I get my passion back when I allow myself to be obsessive. The projects where I've started big and only tried to get bigger always end up a craptastic mess. But when I start small, like I want to create a shot about being sad, and then let myself obsess over whatever I think will make that sing, then I get something I'm really proud of.
I made a video on my screenwriting process a little while ago (https://youtu.be/1tSKpwBww2g) and I don't like to stress out on initial ideas - but what I didn't mention is that most of my videos are super short - like between 10 and 60 seconds. I really like to refine a concept to the point where I'm passionate about what I can cram into a small space. Like the idea of mastering storytelling on Vine videos.
A script doesn't have to be stellar for short format, it just has to capture and communicate your plans. Sometimes it is a storyboard. Whatevs. I would just find an idea that's fun and then try to make it sing. Do that enough times and you'll be really good at it.
Maybe this helps you too?
You can do it. There's a ton of money that you could spend, and some very good reasons to do so. But if you really only have a little bit of money and want to do 3 point lighting, I suggest constant light, daylight balanced soft boxes. Like those referenced here: https://youtu.be/r9kf9RKf_VU