You can subscribe to the wait list with a different email addresses to receive a multiple authorization tokens. Then you will generate the same amount of identities and sign them with authorization tokens from the invite.
I should warn you about downsides of running multiple nodes behind the one public IP address:
- Your nodes will be treated as a one node for uploads or downloads. So you will not receive more data than only one node.
- For audits they will be treated as a separate nodes, so your channel and hardware could be saturated with multiple audit requests, so each of them can have more failed audits than if were only one node.
- The vetting period for each node will be longer in the same amount of times as a number of nodes: the vetting node will get lesser data than a vetted one (5% at the moment), but since they are treated as a one node, this small amount of data will be spreading across them. To finish a vetting process each node should pass 500 audits on each satellite. More nodes - longer a process (up to infinity).