Core Skills For All Pilots - train them ALL to 5 The time invested will be repaid many times over throughout your Eve career.

Engineering - To maximize the power core.
Electronics - To maximize the CPU.
Energy Management - To maximize the capacitor capacity.
Energy Systems Operation - To maximize the rate at which the capacitor recharges.
Energy Grid Upgrades - To reduce CPU requirements.

Stacking penalties

1 - 100%
2 - 86.912%
3 - 57.104%
4 - 28.247%
5 - 10.59%

Distances

1 AU - 149,000,000 km
3 AU - 448,000,000 km
6 AU - 897,000,000 km
9 AU - 1,346,000,000 km
12 AU - 1,795,000,000 km

Standings to use agents

Lvl 2 - 1.0
Lvl 3 - 3.0
Lvl 4 - 5.0
Lvl 5 - 7.0