Qubes OS Install on a 1TB SSD USB. Best configuration for two separate partitions (installation + Storage)?

I am using a highspeed SSD
/dev/sda1 for /boot/efi
/dev/sda2 for /boot
/dev/sda3 for lvm (root and vm-pool)
/dev/sda4 storage

So I should be encrypting both sda3 and sda4. I need luks2 encryption.
And after installation will the gui be demanding password for both partitions separately?