I know I’m only beginner like you, so take with a grain of salt, but alongside wanikani I’m doing Cure Dolly and TaeKim for grammar (just reading and a few exercises, no memorisation). I’m planning on Satori reader for once I’m level 10, but until then, just Wanikani, and when I feel like doing Japanese but don’t have reviews I use the two grammar resources.
I LOVE RocketLanguages.com (Japanese). It’s a paid site but you can get lifetime for a decent price. They normally have a sale before Christmas. Rocket has grammar, conversations, writing, culture, listening, some reading, and lots of fun reinforcement activities. Everything you need except a huge kanji section. (That’s why you have WK!)
Manabi Reader creator here - thanks for the shout! As an indie dev I rely on word of mouth like this. Please let me know if I can help somehow. I’m actively working on improving the app (working on Anki integration right now) so any feedback is appreciated.