With two nodes, you can use other sort of load balance not with NDB cluster.
Anyway i don't recomend this cluster if you need simple and easy installation and managenemnt.
Cluster is very hard to tune, manage and backup.
The setup i did works but it needs constatnt checking or reprograming few SQL clauses to use it well.
I think you will be better of with any master-slave/master-master config with any kind of double connetion to mysql.