How do you say

We’re planning a trip for next month. Are you ready to join us?

..in Chinese?

我们打算下个月去旅行,你准备好加入我们了吗?

wǒ men dǎ suàn xià gè yuè qù lǚ xíng , nǐ zhǔn bèi hǎo jiā rù wǒ men le ma ?

How do you say "I am going to buy a new jacket." in Chinese?