therecruit

I would actually go into Quant first. Since you didn’t grasp it properly at L1, you’ll probably need to take it slow at L2 and maybe learn/re-learn some L1 stuff to get things right.
Closer to the exam, you’ll be concerned about all 10 subjects and you may decide to skip quant alltogether (not many points, takes too much time, but still can make the difference in your test).
I think Quant is worth learning for all levels because every now and then some other topic refers to it.
I don’t like CFAI material for quant either. If you want a more intuitive approach, I’ve seen a couple videos from Khan Academy and they’re pretty good.