Does anybody know how long the lifespans of the Akaviri races are?

We're not really sure how they live. Considering the vampiric Tseaci, I would say that they are at least immortal. The others? I'm not sure about.

I think the Kamal would be immortal as well since they're demons. Or at least can only be killed.

Ok so Tsaeci are like dragons as far as life, and Kamal would be similar to Daedra. Or maybe they live so long because they freeze and are preserved.