Take the Options or RSUs?

I’m starting new job in January and have a choice in my vesting package. I can split the RSUs and options any way I want (25/75, 50/50, 0/100, etc) but have to choose pretty soon. Background- the company is a biotech that many of you probably know, however is poised to have a big upside. Not sure how that effects my decision, but my assumption is an option now would be the best bet for long term growth, right? Where the rsu is best if the stock stays the same or dips? I’m new To this, any help is appreciated!