I work at a startup. I haven't liked it for a while, and have decided I want to leave. I've been there for about 6 years.I want to keep my equity. I have NSOs, and would have to execute within 90 days of leaving. I think there's a decent chance it will be worth a decent amount of money in the next few years. I don't plan to execute with my own money, as the cost to do so is ~100k. I also don't think there's any chance I could execute with a loan or anything like that.I plan to ask for an extension of the 90 days to execute. If it's extended, I would stay at the company for 6 months or so to allow for a smooth transition. If it's not extended, I would leave immediately.I'm a key employee. If I were to leave abruptly, it would likely serious cause problems for the company.Am I crazy? Should I be asking for something else in order to keep my equity?