Engineering 5 max the powergrid /
Electronics 5 max the CPU /
Energy Management 5 maximize the capacitor capacity /
Energy Systems Operation 5 max the capacitor recharge rate /
Mechanic 5 max hull strength /
Shield Management 5 max shield capacity
Shield Operation 5 max the shield recharge rate
Hull Upgrade 5 max armor strength /
Repair Systems 5 to use the best armor repairers /
Energy Grid Upgrades 5 to use t

Damage type on rats
Guristas = kinetic/thermal
serpentis = thermal/kinetic
blood raider = thermal/em
sansha = em/thermal
angel = explosive/Kinetic/Thermal

Hardeners to use
Angel - Exp/EM/Kin
Amarr Navy - EM/Thermal
Gurista, Mordus, Gallente - Kinetic/Thermal
Blood - EM/Thermal - Damage to use EM
Sansha - EM/Thermal
Serpentis - Kinetic/Thermal
Mercenary - EM/Thermal/ - Damage to use Kinetic