The map is completely random each time so there are issues with how things line up sometimes. If I'd had more time I might've added in a check to ensure that resources weren't being packed too close together, though I might argue that there's an interesting risk/reward mechanic in going after a resource without knowing if you can actually reach it.
As for the delay in getting resources, the resources aren't actually counted until the villagers bring them back to town, so that's why there's a time gap. In retrospect, that might be something to change