In which order, should I read these scriptures Gita, Mahabharata, Ramayana, Vedas, Upanishads and How many pages these books are?

I want to read the five scriptures Gita, Mahabharata, Ramayana, Vedas, Upanishads. But I don't know in which order should i read them. Can anyone tell me 2 things , How many pages are these and in which order i should read them?