So, if I wanted to change this to a suggestion, "Letʻs you and I talk to Kaleo," I would use the e particle, "E kamaʻilio kāua iā Kaleo." Before today, I didnʻt realize e is not only for imperatives, but also for stating intent.
I think "we both" is fine as an interpretation. Mahalo for suggesting it. Just a note: the best way to get suggestions for alternate translations seen quickly is by sending them in as reports using Duolingo's built-in reporting feature.