DMX Newbie Question

I have an older DMX pedal that I use to control (2) stands of (4) par-38 cans plugged into dimmer packs. A stand is used on each side of the stage.

I would like to replace these older par-38 cans with American DJ Mega Pars.

Is there a way to control 2 stands of Mega Pars (8 lights) with one foot pedal?

Would my older DMX pedal that I'm using now work or do these new lights not work with the older stuff.

Thanks,

Dan