Your hardware setup is a bit too big. You should have a look at ESP32, it can be programmed with arduino as well, but it is much smaller and Bluetooth is already embedded.
Another options, maybe even better, would be to use a nrf51822.
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Your hardware setup is a bit too big. You should have a look at ESP32, it can be programmed with arduino as well, but it is much smaller and Bluetooth is already embedded.
Another options, maybe even better, would be to use a nrf51822.