Both the Liberto and Krakot are great. They have stupid good profiles for ridiculously low costs. On the other hand, playing ALEPH with a fish man and a Morat feels...wrong. Do you use any creative proxies to make it seem less weird?
I'd go the private contractor route. Painted up in an ALEPH color scheme, you could use a CSU for the Liberto, and Beefcake Bounty Hunter for the Krakot.
This makes me wonder if Aleph could create a L-Host that looks/is biologically similar to either of those two alien species.