How do you say

He took a three-month backpacking trip with friends.

..in Chinese?

他和朋友去了三個月的背包旅行。

tā hé péng yǒu qù le sān gè yuè de bēi bāo lǚ xíng 。

How do you say "I plan to use the next three months to take painting classes and learn a new hobby." in Chinese?