probably want the black ice pro 2 rad for use with those quiet yate loons.
i don't really see the point in changing all of your fittings, but it's unlikely to hurt. not everyone finds the DD high-flow fittings to be good to work with.
i just hope that your MCT 40 doesn't gum-up........i think that i remember someone on this forum had that happen after an extended period using it. the storm won't take kindly to anything that could block its nozzles.