My startup is at an early stage, but we recently won a year long contract from a F500 company. The potential advisor is asking for twice as much equity as our previous advisors, and he wants it upfront, undiluted. The advisor is well connected in the space, and ifhe actually follows through on the introductions he's promising, this is very much worth it. I'm just uncomfortable with the upfront part of this. How do I counter? 3 month cliff for the majority of the equity?