ive got two switches... one powers two lights aimed off towards the outside of the headlight beams and one powers two lights aimed out farther than the head light beams but straight... i like having two

and yea you should be fine with 1 switch powering two relays for two sets of lights if you want to go that route... make sure you have clean (fused - divide your wattage by 14 to get how many amps your fuse needs to be... ie two 70 watt lights would need a 10 amp fuse ) power going to your relays