This is the most appropriate choice. You take the hand of Mary of Gueldres. She is an 'attractive' catch: wealthy, of good social standing, with strong bloodlines.
You marry Mary of Gueldres, the daughter of the Duke of Gueldres (Gelderland) and neice of the powerful Duke of Burgundy. Part of your marriage settlement is a set of cannons much more advanced than any native weaponry. What a deal! Artillery is one of your favourite things.