Unless you're going to work more in some way that increases the pension, grab it while you can in case they do go bankrupt!
PS. If the pension remains in force for decades, inflation could affect it. As someone who also has a pension coming (though much smaller and later), I have considered that the mortgage on a rental property could neutralize inflation's power to erode the pension's purchasing power. Fwiw, I figure that if the payments on the mortgage and the pension are equal at the start of the pension, the inflation effect would be equal until the mortgage gets paid down. Just a thought - curious what others think, in case there's something I missed.
Anyway, enjoy your lotto winnings.