Get a decent wattage lightweight class D head (e.g. 500-800W) and a great neodynium speaker 2x12 cab that can handle similar and that's all you'll need. Plenty of power and headroom and anything bigger will be through the PA. Look at GK, Genz Benz, Fender, Darkglass and all the other similar manufacturers producing this type of equipment and you won't go wrong.