Default [Q] rogers d803 4.4.2

Just purchased a rogers d803 and has 4.4.2 I have a few questions. Do I need to downgrade to 4.2.2 to root and to have custom recovery. Another question where can I find 4.2.2 rom for it. Tried searching but no luck. Ok just one more question if I do restore to 4.2.2 do I have to update the boot and kernel to have 4.4.2 custom rom work right. Thanks