Pot question!!!!

Hey there!!
I am about to start and outdoor grow with autoflowering strains and i will use the 12 Blumat autowatering system!!
Here is the question...
Is it smart to use 2 x 55lt smart pots for 14 plants or should i use 12 x 11lt smart pots for 12 plants???

Please tell me your in Australia.......

Probably the 11L pots, smaller and easier to isolate if a plant gets disease etc, easier to transport, and that little bit extra root space