Dwargon was 3 or 4 weeks from the goblin village by foot. 50km/day for more than 20days, over 1000km?
They got there faster thanks to Ranga and co.

It's true that for naming, the idea of famillies/group/clan like Ranga and co would have been better. Each group gets a name and individuals get a second name they can decide for themselves (or given at birth). Pretty much what we have IRL.

As for resources, well it's possible Treyni helped with that. After all there are wooden buildings. So it's not unthinkable she tolerates some hunting, harvesting and with the help of magic you get a way faster forest/resources recovery.