Bike Storage: Wall mounts, stands, lock-ups, sheds, etc.

I think the bike would be able to swing around a bit too much for my liking, two hooks seem to work quite nicely
unfortunately i only have a wall which is about 80cms wide and i need to fit two adult bikes and one kids bike so two hooks won't work for me as the bikes won't fit horizontally. would suspending them by the front wheels a good or bad idea?