Yes, Vivo Y17 does support FM radio.
No. Vivo Y17 does not have the front camera flash but it does have the display screen flash, just like an iPhone.
No. Vivo Y17 does not have an LED notification light.
Yes, Vivo Y17 does have the hybrid sim slot. But you do not require to worry about the internal storage. As the phone comes with huge 128GB internal storage.