I’d swap Pooh/Samwise and Piglet/Frodo.

Pooh/Frodo is the more adventurous type and Piglet/Samwise is the loyal tag along. Plus think of scenes like Samwise chasing after Frodo as he crosses the river. Pooh would be the one trying to adventure off and the nervous Piglet chasing after. Or Piglet carrying Pooh into Mount Doom.