Damage types to protect against based on enemy type:
Guristas - Kinetic / Thermal
Serpentis - Thermal / Kinetic
Blood Raider - Thermal / EM
Sansha's Nation - EM / Thermal
Angel Cartel - Kinetic / Explosive / Thermal
Minmatar Fleet - Thermal / Explosive
Amarr Navy - EM / Thermal
Mercenary - Omni

Damage types to shoot at the enemy:
Guristas - Kinetic
Serpentis - Thermal
Mordus - Thermal & Kinetic
Galente Navy - Explosive
Blood - EM & Thermal
Sansha - Thermal
Angel - Explosive
Mercenary - Thermal
Amarr - Therm / EM

High Sec Systems with Amarr Ice:

Afivad, Agal, Avada, Bashakru, Chanoun, Dantan, Dihra, Erkinen, Esteban, Gamis, Gelhan, Gosalav, Jarzalad, Jerma, Kothe, Mana