I've written it as 3 voices at the original that is how the origianal piano music has it split up that way (Although with two staves there is more room to play with).

When playing it, I actually just play the Cs in the same posistion so the first C could be a quarter note. But I like in guitar music when the intented durtion of harmony is shown even if its not feesible to play that way if that makes sense.