Derespina Knives

Hi All,
I was curious if anyone out there with greater tree frog experience would know the following:

I want to house a couple of each Barking Tree frogs, Green Tree frogs and gray tree frogs together. IS this possible without them cannibalizing each other?

I know from a friend that Barking TFs will cannibalize other smaller frogs and typically they can grow a little larger than Green or Gray TFs.

Any info would be greatly appreciated.

Thanks
R