one last question before i make my keyboard purchase monday....

the keyboard im looking at getting the casio wk3000 only has one jack for line out/phones the wk3500 has a l/r jack for output and a phones jack....

my only use of the output jack would be fore headphones or to output to my speakers and i wouldnt need them both at the same time... by output to my speakers i would (on the 3000) get a good cable that spilts the 1/4 inch jack into two jacks for left and right and plug it into my surround sound just for fun... nothing for professional stage performances or anything... will splitting the one output sound good? or do i really need the sep l/r outputs???

any advice appreciated thanks
DirOfCIA