Do I take the job?

I’ve been applying and interviewing pretty regularly for a few months and finally landed a J2. It’s remote for a startup in the FP&A space. I have a lot of experience with software startups so that wasn’t really a red flag for me. However, the interview process was really intense and they kept saying the dreaded “this is not a normal 9-5”. I’m in early rounds of interviews with one other company, but this is the only offer I’ve received so far. Do I reject and keep looking? Or bite the bullet and see how it goes. I really need the money. I love J1, but they just don’t pay enough.