if i have front speakers that are 3 ohm and 125 watts each (250 pair) and rear speakers that are 4 ohm and 50 watts each (100 pair)....i have a four channel amp thats does 150x4... can i run the front channels two speakers @ 3ohm and 187x2....and run the rear channels @ 4 ohm and turn gain down and run them at 50x2.....Can i run two different wattages and two differen ohms to the front and rear >>PLEASE ADVISE<<<<