I’ve been doing about 8 days per level, with a few 7s in there and a couple 10s. I don’t use any scripts. I try to synchronize my level ups so I can do radical lessons as well as their 4 hour review in the same day. That way I can do their 8 hour review the next morning.
I do about 20-30 minutes of WK on the bus in the morning, about the same during lunch, and maybe 45 minutes at home. Since I work full time and have other hobbies, I only do about 1-5 hours of non-WK studying a week. My current goal is to reach level 30-ish so I can know enough basic kanji to read real material. Then I’m expecting to slow WK down a bit and focus more on other sources.
There are four “parts” to learn for each kanji: reading, meaning, radicals, and mnemonic. My goal when I first Guru a kanji is to have three of the four of those fully locked in. Then, I aggressively learn vocab to reinforce meaning (and reading when they match). When I can’t easily remember 3/4 pieces of a kanji, I look it up in Jisho to try to learn other details about it that can help me remember.