welcome to the forum!!!
depends if you have time everyday to speedrun or not. at 20 lessons a day, you should be levelling up in a week or less than 10 days at least.
if you don’t reorder the kanji, you should have few vocab left at the end of the level. but when you guru your last kanji, you always unlock vocab. i’ve recently reset and i do 10-15 lessons a day. i usually do all vocab on the first day of a level to clear some indeed.
a good way to clear enough vocab before hitting the next level is to aim for at least once 0 reviews 0 lessons during a level.
we have a 0/0 streak thread where you can post everytime you get to 0/0 in a level. no one is holding accountable of course but i found it helps me be reasonable with prioritising kanji and radicals.
the thread is here: The 0/0 Streak Challenge