Sound like a similar set up to mine minus the wind generator. I have a 6kw diesel genset and about 450w of solar with a 600amp's in 6v and 12v batteries.Yeah I have about 720 watts of panels and a Windmill generator mounted on my mast and 980 amp hours of gel cell marine batterys on my 37 ft lancer Sloop. It sounds like a lot but trust me it doesnt take long to drain those 8D batterys down even without running a space heater!
Under good conditions they usually generated about 3/4th of their rated wattage for about 6 hours a day, sometimes longer when in the tropics, thats not much. The windmill would produce about 400 watts an hour if there was a good 15-18 mphs of wind hitting it. The batterys held enough of a charge to allow me to go about 2 days or so off shore power if I didnt use the Radar, Microwave or electric stove and only ran the fridge a few hours a day. Solar power is great but its not effcient and its expensive to set up an array and battery bank that will hold you over. It is a pretty decent investment though when you consider the cost over the long haul of 15-20 years. Good batterys will only last about 5-6 years if you dont completely drain them very often. And yes I had a gas genset on board below deck in addition to the desiel engine the boat had. Sometimes I needed it!