Well, can you change the gravity there?
Normally, theres a limit that doesn't even allow luna to be colonized.
I guess your background has some really high tech or something? How could one colonize Io otherwise, what with it's surface basically being exchanged several times per year?
And a Planet with an 86 earth day day would probably have a cold-warm border, and thus extreme storms that rip everything up.
No I changed the gravity tolerance, to be honest I discovered only now the problem of Io volcanic eruption, I based the colonization of it from the movie "Outland" (with Sean Connery).
For the gravity I assumed that for some reason the colonies had a "special" gravity generator like many sci-fi environment, o better, the gravity wasn't considered at all.
But for flavour I think that when I'll colonize new planets I surely search for tolerable gravity.
I made mainly this choiche because I wish to have less systems but with many colonies at the start