Originally Posted by Ancarius

Player Level only matters, when you are not online often enough to never waste your natural stamina Regen.
You can just start pushing towards 11-1, where the advanced garden starts to spawn. If your team doesn't make it until there, you know you have to farm some more in the early areas.

No my question was at what player level will I have enough stamina to start farming.
I'm already passed the 11's, I unlocked 12-1 last night and haven't those missions yet. I didn't go for three starring since mission 8, with how much my team has improved since I passed mission 8 I'm sure I could three star those ones, not sure about 10 or even 9 though.