The assemblies you reference don't look suitable for headlights, unless you mount them behind a factory type lens. They seem OK for fog lights, as is, which makes me think the output isn't enough for headlights also. They are supposedly waterproof, but don't look it.
I think you'd be better off with a bi-xenon setup, hi beams and low beams from each lens. Also, these small lenses, when they get dirty, spread light horribly, which is why most setups are behind a clear plastic cover.
I'll be polite and not voice my opinion of angel eyes, although yellow demon eyes would be killer...