@Tibus I gave you the footprints, for SMD it is equivalent of the wattage)
actually only R4 & R5 a sensitive to the footprints. An even more sensitive to a maximum rating voltage than to the wattage.
I'm using two 1206 in series to be sure that they will hold up to 400V. I made a check of different brands, usually the maximum rated voltage for 1206 is not bellow 200-300V, that means that in series of equal resistors the maximum rated voltage will be 400-600V
all other resistors are under low voltage and very low power dissipation
but if you need wattage just for learning curve, usually 0601 is 0.1W, 1206 is 0.25W