What next ? Can’t decide…

So I'm just 2 chapters away from finishing

𝐇𝐚𝐫𝐫𝐲 𝐏𝐨𝐭𝐭𝐞𝐫 𝐚𝐧𝐝 𝐓𝐡𝐞 𝐃𝐞𝐚𝐭𝐡𝐥𝐲 𝐇𝐚𝐥𝐥𝐨𝐰𝐬 book

And literally reliving every chapter of every book in flashbacks…that's a whole different feeling when I'm on the edge of completing a Legendary Story…

Apart from that I'm a little bit confused about which book to start next…I have 4 unread books…

The Kite Runner (Khaled Hosseini)

A Thousand Splendid Suns (Khaled Hosseini)

The Metamorphosis (Franz Kafka)

1984 (George Orwell)

Can anyone suggest which I should read first ?…