Load balancing is not available yet. Maybe next in major release.
True high availability will be available when our dedicate load balancer is ready. However, all of our product offers 0 download time, restart, configuration apply, even software upgrade, if the server hardware does not fail, it will provide pretty high availability.
Right now we does not offer single CPU license, but it may change in the future. Two worker processes will be started with a 2 CPU license, whether to use it on a single CPU system, HT or real SMP system is up to you. :-)