In this hobby there are very few certain yes and no's. How big are your angels now? I'd think they'd be OK in a 29 for awhile...will be MUCH better in a 55 as soon as you can get it. The biggest part of their growth should happen when they're younger so if you're not giving them sparkling water conditions (good filter, plenty of water changes, not overfeeding, quality nutrition, plenty of space to swim) their growth will be stunted...just like any aquarium fish.
Example...I put a quarter size angelfish in my 46g tank and in the first couple of months he more than quadrupled in size. My roommate put two angels about the same quarter size into a 20g tank, didn't do many water changes, only fed once in awhile and mostly only flake food...and four months later they hadn't even doubled in size. Would they have DEFINITELY gotten as big as mine in a bigger tank or because of more water changes or because of better food?? No one can say for sure...but its likely.