A proposed hybrid design uses overlapping address ranges across multiple acquired businesses. Renumbering and supported translation options must be evaluated before deployment. Which approach best fits?

1. Plan appropriate subnet secondary ranges for the cluster.
2. Use a custom-mode VPC with deliberately allocated subnets.
3. Expand the supported subnet primary IPv4 range after validating the new allocation.
4. Perform address-conflict analysis and choose a documented renumbering or translation plan.