I'd suggest against it unless you can find a specimen already eating prepared foods well. Angels will graze constantly. So, if you have a multifasciata that won't eat prepared foods, it's then got to compete with two other centropyges. I gave a centropyge multifasciata a try early this year and he wouldn't eat anything. I even tried live foods like brine and blood worms, fresh clams, and every frozen food/brand you can think of.
I think space wise you might be able to get away with it, but I'd say no due to difficulty in feeding.