Ingame: max all. Video, Windowed (not Borderless) & FOV. Video Quality, Ultra. Quit. Edit: ...My Games\Far Cry 3\GamerProfile.xml. ResolutionX x2 & ResolutionY x2 (yours + border). Read-only. ShiftWindow (+ border = borderless).
(PLP screenshot with bezel effect)
Game looks great. Optional FOV (not needed, untested): Flawless Widescreen.
View guide for general help with the instructions.