Did average on the JLPT, should I begin to continue study to intermediate level or review things first?

So, I took JLPT N4 weeks ago, and I'm slightly confident that I will pass, though I have some vocab or grammar points that I still forget here and there. But overall, I'm not completely stumped.

I had planned on continuing my study from Genki II to Tobira, but I'm worried that those forgotten vocab and grammar would bite my ass in the future. So, any advice on what should I do?