WHFB Empire Greatswords are a good start, and I'd probably suggest a box of the Empire Militia for the arms (NB: the Militia are probably also good for any characters on the side-lines too).
Helmets might be the only issue, although you could use the ones in the Greatswords kit or hunt around for separate heads from another fantasy football minis company. I know that Impact Miniatures make a sprue with catching gloves on it too.