[pinawinekolad]

Is Sanatana Dharma suitable for westerners? Why or why not?

Sanatan Dharma is universal. It not limited to Human but other species too. If you read Ramayan you will see Monkeys, and birds too found this Dharma suitable.
Like mr. Raghy said it is vast, and there is no one book to follow. There are various paths, various practices and methods for you to choose.
It is up to you to choose. Welcome.