Wow, I never have had a Beaucarnea bloom. Amazing! It must love the weather there.
Did you grow those young Pachy lamerai from your own seed? My P. geayi and lamerai both died after about 5 years of growing. I suspect the very high heat, but am not sure. Maybe I watered when I shouldn't have.
I have Aloe marlothi in the ground here in afternoon shade. Grows well but no flowers. However, I don't mind that. At least it isn't all burned from sun and/or heat exposure like many of my plants. Here is an example: Obregonia denegrii
