- Keep an eye out for the discounted lifetime membership in December.
- Learn about userscripts in the API and third party apps category. Install wanikani ultimate timeline, self study quiz as a minimum. There are plenty of other good userscript suggestions if you read around.
- Here is a link to a MIT course for Genki readers. That might make the grammar study more interesting for you.
- Don’t go overboard with resources. You have more than enough suggestions here.
Addit: include the link for MIT course using Genki