What I can see happening if we ever did get to that planet, would be a massive spaceship that is practically a Noah's Ark of creatures, plants and technology. Would be pretty cool to see the growth of human on a new planet. I wonder if we would make the same mistakes?
From what I understand, it's unlikely that we'd get very far with our current biology, it's just not flexible enough to survive well outside of pretty much anywhere except the surface level of the Earth. The radiation, lack of gravity, etc, would not be manageable.
Seemingly far more likely is that we will have to first remake ourselves (or our descendants, whether or not they must come from a human womb is an interesting consideration to ponder).
I sometimes wonder if this is where intelligent species die. Dominated quickly by vastly more capable offshoots, perhaps even often completely replaced, which self-improve rapidly until becoming comparatively rational (as how could you ever choose to be more irrational?), at which point, I wonder, would a mind do anything without a motivation drawn from a soup of irrational chemical emotions such as fear, hunger, lust, and wonder? The universe may only be capable of creating and harbouring species up to just above our level of intelligence, beyond which they perhaps nearly always die off as part of an entirely normal cycle. /sleepy brain pondering things because it irrationally wants to