If you're using up fitter switches in the bronco you should have no issues with amperage on any switch. Save 1 and 2 for your higher amperage draw items. I would use the Driving Combo for the bumper and Wide Cornering for the A-Pillar (Ditch lights) pointed out at a 45 degree angle. You will not likely, however, be able to legally run any of these lights on road or highway, off road only...
If you are using the Uplifter switches, it easy stuff...
For me, I'd run spots on a roof light bar for the most light penetration for distance if you are running pedal down and do floods for the pillars with combo in the bumper.
Simple way to figure out amp size for fuse is take the total wattage divided by Voltage most batteries are 12.5-13.5 volts = Amp- fuse size.. Good for future reference..