don't use "我要"，haha，我要 generally means "i want"

it depends, in chinese there is no fixed form to express future state for example: I will do it in two days,我(会)在两天之内搞定它 We will eat the pancake at 11am. 上午11点的时候我们(ellipsis)吃蛋糕 I will sleep at 12 pm today. 今天我(打算)晚上12点睡 BUT I'd like to tell you there is an universal word can be used in most situations——"打算", although sometimes not that appropriately. I will do it in two days,我(打算)在两天之内搞定它 We will eat the pancake at 11am. 我们(打算)上午11点吃蛋糕 I will sleep at 12 pm today. 今天我(打算)晚上12点睡

我要。。了