Since 1.5 update Fer-de-Lance has one class higher power plant so no more serious power issues and we can have shield boosters and full load of Plasma, also since very same 1.5 update Fer-de-Lance is more agile meaning it's a good ship to have Plasma Accelerator on, at least one huge one because let's face it - 5 plasmas on Fer-de-Lance is unpractical and in most cases will harm more than help you, but this is Extreme Loadout video to see how Fer-de-Lance can handle full load of Plasmas.
Fun thing is that FDL will run out of WEP capacitor faster than overheat (actually one shot from all 5 plasmas and it's empty) so no issues with heat, but when you are out of WEP capacitor you can't shoot with all plasmas for quite some time thus reducing your firepower significantly.
(c) Frontier