Then, as with most raid-style content the world over: you're hosed. These things are formulaic: figure out the formula, exploit, lather, rinse, repeat.
If you're going to be four slotting some of those defenses you might want to consider franken-slotting them with Defense/End Reduction or Resistance/End Reduction to save a bit more on your end consumption. You might also want to take a hard look at the numbers for Leadership: Maneuvers, for a power pick and +3 slots it simply isn't that much Defense for the end cost. You might also want to reconsider having both Wolf Spider Armor and the Bane Spider Armor Upgrade.
I'd suggest Surveilance and Call Reinforcements, you may also want to reconsider having both Wolf Spider Armor -and- Bane Spider Armor Upgrade at the same time ... WSA is kind of inferior IMO.