I'm glad it helped! It was a little weird but the best thing I could come up with on the spot lol. But you're not alone there, the issue that 99% of people run into with this method is the intimidation and the discomfort of not understanding. When it comes to our entertainment, we're used to just turning it on and understanding it and it's upsetting to imagine not understanding. But you're totally correct, there's no other way around it. You just have to dive in.
I think it's a pretty good plan to start with! Depending on your comprehension though, reading pure text may be too much of a grind. I recommend leaning more towards Youtube and installing this Chrome extension. https://getiago.com/ It will let you interact with the language and make not understanding a little less painful by being able to look up words. Watching content with Japanese subtitles has the added benefit of improving your reading skill and your listening skill at the same time.
It's recommended to just stick to 1 starter deck. So if you got the JP1K, I would stick with that. Doing more than 1 starter deck is a waste of time and there will be a lot of redundant vocabulary overlap. More Anki does not mean you'll learn words faster. Keep that in mind. Immersion is where the magic happens, not Anki.
With your background, there may be words in JP1K that you already know. If you come across a card where you look at the kanji and know what the word means and how to read it right away, just suspend it. Suspend any cards with words that you know really well to save yourself time. There's no need to study information you already know.