You also have to honestly evaluate the chances your company will go public and hit it big. If it were me I’d take the sure thing salary of 140k a year over the chance this company would hit the lottery, but I tend to be more risk averse than most people.
Just make sure you aren’t drinking too much of the company kool-aid. It is really easy to get caught up in the momentum and a lot of times the hearsay never pans out.