Few questions about Phal with keiki's

[Sssassskia]

Just have a few questions about this Phal i have. I used keiki-boost on it. It didn't take long before i noticed something was growing.

One spike had two keiki's, and in the middle something that looks like a spike. The other spike has one rather large keiki, with another four thingies next to it. Next to the keiki seems like another small keiki, next one looks like a spike, again a small keiki and again a spike.

Now i was wondering if all of these baby's won't take too much of their mommy. She seems alright and healthy (even produces another leaf).

I was also wondering when the keiki's will produce some roots and if i can do anything to promote that?

Some pics...