Okay, so Keith is a pilot, and would be really up for helping with ferrying people back and forth... except... he's on a spit-induced trip, so someone would need to get him treated for that if you want his help. It's a baaaaaaad idea to let him take the helm in his current state.
As for Rayla, she's already on the Graq ship with the infiltration party, so that's a plus? Except she's tiny as all get out. With the height difference, she's not carrying a 6-foot-tall Agrii no matter how light they are, so she can run escort missions for defense as needed. But, she's also not immunized against the spit-balls, so someone might want to help her with that. I'm okay with her getting hit and being on a trip for a while if it needs to work out that way, but she'll eventually need to be treated at some point if she's to continue being helpful.
Keith & Rayla
As for Rayla, she's already on the Graq ship with the infiltration party, so that's a plus? Except she's tiny as all get out. With the height difference, she's not carrying a 6-foot-tall Agrii no matter how light they are, so she can run escort missions for defense as needed. But, she's also not immunized against the spit-balls, so someone might want to help her with that. I'm okay with her getting hit and being on a trip for a while if it needs to work out that way, but she'll eventually need to be treated at some point if she's to continue being helpful.