Not from personal experience but reading around online when I was having questions too.
I’d pick up Genki I, go over that and read any chapters that weren’t covered in TextFugu. Then jump into Genki II if you’re ready. I remember reading somewhere that TF covers 2/3 or so of Genki I. Not sure how true that is though.
I’d be curious to hear what other people think too.
Edit:
Here’s a course on it
https://ocw.mit.edu/courses/global-studies-and-languages/21g-501-japanese-i-fall-2012/
You could look through that and see what you know.
Edit Edit:
Shamelessly stolen from