The easiest and cheapest way I can think to do it, is to use 4 separate clockwork timers with a plug on the back and a socket on the front. We can get these in England for about £4 each, and stuff in the U.S.A. seems to be cheaper than here. These timers usually have a set of radial levers around the clockface, and you pull out, or push in to set times. Some of them can handle 10 Amps or more. Plug 4 of them into a multi block, programme, and you're on your way.
Best Regards
Tom
Nunce excreta in extractum est.