I think what i plan on doing is flashing a pre rooted odin firmware file, reason being is I check google play and all reboot toggles require a rooted phone..
so my plan use odin to flash rooted firmware, then use google play to install reboot toogle, then ill be good to go.
I keep this thread updated for anyone else with bad power buttons
Ps Also to get to download screen without power button hold volume down + home button with usb plugged in.
then insert battery and download mode will be achieved...good luck