Upgrade the BB's to one star then start.

I use a DPS warden for this but a huntress or app is fine as well. 

Make sure to spawn in your heros after you finish this phase before going to the goo fight. For goo use a hermit w/ cat + monk w/ cupid and then 2 target farm chars.

- you can 2 phase goo with herm and monk so its the best method to farm