Instead of lowering the footrests you could raise the seat by fitting spacers to the mounting bolts. M8 connector nuts do the trick. They are about 25mm long.
Fasten them into the seat base with short lengths of M8 studs and then screw the seat bolts into the nuts. You can always change back to standard.
The beauty of this is that it doesn’t change the ground clearance or change footbrake or gearchange positions.