Combining Bead Types

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I have 20.5 oz of HMC beads, which are working well in my 50-60 quart coolador, and also have about 8 oz of Heartfelt Beads in my desktop. I just purchased a Wineador and am planning to get rid of both of the other 2 for it. My question is, is it alright to combine the two bead types in the new larger space? I don't see why it wouldn't be, but I am no expert and can't find anyone saying it definitely is. All are 65% (I know the HCM's can be adjusted).

In addition, I'll need to add more. Just for a price standpoint would adding KL to the set up also work for additional help?

Sorry if this is addressed elsewhere, I searched but couldn't really find anything.