Striker Build

I'm level 66 so far. I went with

Max HP Increase.
5 Mastery.
6 Booster.
19 Mastery.
7 Lightning Charge.
2 Energy Charge.
11 Blast.
Max Energy Charge.
Max Blast.
Max CSB.
Max Lightning Charge.
11 Booster.
Max Mastery.

I added in the 7 Lightning Charge early on since I've been living in Singapore since level 42. Tried to keep casting it+booster convenient.

I loved having EC+EB early on since the big mobs help you gain energy quickly. I don't really like having to charge CSB for max damage. It's just really a rush skill for me.

Is there are huge difference in energy charging while leveling up charge? Mine's only at level 2 currently, and even maxed out rombots in cpq make it seem quite slow to charge, relative to its duration.