I just scraped some info from various sources, and used a bit of text processing to clean it up and get it into the semicolon-separated format for import into Anki.
No brainer.
You don't want to be making large numbers of Anki cards using its unwieldy UI.
> in making the card i've already internalized it
When you're making a new card, it may feel like you have it internalized, but that's only for a half hour or so. It's just short-term memory.
Have you tried premade decks? What was your experience with those?
With more and more use, using Anki becomes second nature like with any application.
I got the most out of Anki after watching videos; this one in particular opened doors for me: https://www.youtube.com/watch?v=bwcr25334J8&t=99s