Best way to get from Shinjuku to Toy Story Resort in the evening?

Hello everyone, can anyone please recommend the best way to get from Shinjuku station, arriving at 16:46 on April 15th, to Toy Story Resort, with 2 kids? I've read there is a direct bus to disneyland, or should we take the train (however worried about peak times) , or go for a taxi? We will be tired I'm sure and just want to get there without too much stress if at all possible, thank you!