Iksar shamans gimped?

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I have a level 25 (I think) shaman and while I'm enjoying the class I'm a little worried that I won't be able to do the things other shamans can at max level, like soloing big named mobs.

I don't mind leveling slower (while soloing) without a JBB from 45-60, but not being able to solo some of the harder stuff at 60 might be a deal breaker for me.

Do you need a JBB to solo super hard mobs like the dragons and such in Velious? How big of a disadvantage is not having a JBB while soloing epic type mobs?

Thanks for the info.