Ken Ham's Creation museum is FAILING!!!!!

[Anomalocaris]

So is there ANY wood on earth that wouldn't buckle and cause an ark that size to sink? Is gopherwood some kind of magic substance that wouldn't fall to that reality?

No.  5000 years of experience in the construction of wooden ocean going ship finally culminated at the end of the long wooden ship era in the mid 19th century in the largest wooden ships that were reliably documented.  These ships were about 300 feet long, 60 feet wide, and displaced around 5,000 tons.   Those ships didn't work very well, flexed like a noodle in heavy seas and leaked like sieves because of limited strength and stiffness of wood, and ships didn't get bigger until they inserted iron bracing into the hull.