TH7 Trophy Base Design

Mantis Layout:

Source: http://forum.supercell.net/showthread.php/207442-The-Mantis-a-TH7-Variation-of-The-Tempest

Mantis Trophy / Farming A:

Mantis Trophy B:

From supercell forum (look at his trophies):

For farming, move th outside and storages inside.