Would fat grafting be a good option for me?

You have a subtle crease between your brow and nose- fat transfer may not be such a great option as it is such a small area to fill. Consider some HA filler instead to help improve that area. 

You have a very minimal crease there.  It is from the brow falling and the heaviness of the brow tissue.  Best bet is botox even though it has to be repeated.  You could also try some HA filler to see if it provides the correction you are looking for.  The lower lid crease is the normal crease under the muscle.  

In my opinion, Botox is your best option for what you desire. Although not a permanent solution, Botox is less invasive and and more reliable for your particular issue. Be sure to consult with a board certified plastic surgeon to help guide you. Good luck!