I have kept both of these fish in my 180 with multiple angels but never together. I currently keep a 6 inch adult majestic and it is the mellowest Pomacanthus I have ever kept, just an awesome fish that keeps getting more beautiful as it grows. It shares the 180 with a 5 inch female meridithi and a little 3 inch blueline angel and is the boss of the tank but is a very mellow fish.
My blueface was in the same system earlier and became very aggressive and had to be removed. You have a larger tank and this helps and I think that if you get a small to medium adult majestic (juvies are hard to find) and a juvie blueface and have enough hiding places you should be fine and should be able to keep these two.
I agree with MrTusk, the BF will likely get larger, grow faster, and be the dominant fish.