I know you’ll get a lot of detailed advice.
Mine will be more simple.
You’ll have no idea what those options are worth. And the likely answer is Nothing. And if they are worth something … your one wish is that you had more.
So IF you want the job, then my recommendation is just … ask for more options. It can’t hurt to politely, respectfully, ask for more options. Once. You can ask once. “10k options sounds fair, but a little low compared to other options. Is 15k possible?”
The answer may well be No. In which case, just take the job.
But it can’t hurt to politely ask once.