Evan is so going to be the best godson ever, mostly because he really doesn't require much attention or interaction ;) He's rather easy to please, so like if Peter takes him out for a pint once every three months he'd be pleased!
I'm sure Evan would be polite enough to Regulus, Lily's his favourite parent, so she clearly makes good choices in friends!
I would think that Evan will be nice enough to Parvati? I'm not sure they'd be friends but he wouldn't be rude or anything. I'm not convinced that he trusts Daisy to make good friends that aren't him.
Ooh, I can see them being friends, definitely. Maybe the sort who meet to binge drink and vomit in the street before going home?