[ayaros]

You seem very happy with your current situation. It sounds like you'd be taking a cut in your pay in exchange for much more work. There's a small chance of a large payout if they get bought out, but this is assuming the startup doesn't fail (as most do) and that you stay long enough to be there when it happens.

If they aren't willing to match your current salary and give you a much bigger slice of equity, I would decline the offer.