How do you say

I bought a new overcoat, which turned out to be very warm.

..in Chinese?

我买了一件新的外套,穿上后感觉很暖和。

wǒ mǎi le yī jiàn xīn de wài tào , chuān shàng hòu gǎn jué hěn nuǎn huo 。

How do you say "I intend to replace this sofa in a month." in Chinese?