Yes, you can do that.
The last unit in a DMX chain is the one that should be terminated. DMX out continues the chain from DMX in. If you have something plugged into The dmx out connector, you should not terminate that unit.
DMX out 2 starts a new chain by regenerating the signal. The last unit in this new chain should be terminated.
DMX out = yes, terminate = no
DMX out = no, terminate = yes
DMX out 2 starts a new chain.
If using the ex/RX wireless, you should not use DMX out, but you can use DMX out 2. Terminate does not matter in this case, but you will need to remove the jumper for wireless.