How do you say

I have had this sofa for only a month, but it’s very comfortable.

..in Chinese?

我刚买了一个月的沙发,非常舒服。

wǒ gāng mǎi le yí gè yuè de shā fā , fēi cháng shū fú 。

How do you say "I plan to travel the world in three months." in Chinese?