i have a shitty ten euro timer which can stand up 2 4 kilowatts, so if urs r worht more im sure they can withstand a lot aoff power, im runnin a 1000 waats with my 2 flowerin lights, the fan, air control, 4 flouros and no worrys it says i could add 4 1000 watt lights and nothing else and work proper, thats a lot of power, so id say u r well within ur timers range, worrry not.

house goes BBooom,lol