Soloing Question at Higher Levels

[MaSQue]

So I rolled me a Shaman on Blue99 to solo with when not on my Red99 Enchanter. My friends are talking about forming a brand new group and not twink, to just set a schedule and level with so if I jumped in that I would want to roll a Shaman in the group since we want to do an all Iksar group (good times)

Anyways so if I did that I was thinking of changing what I play as my 100% solo class. So I considered maybe trying out a Rogue, I can pretty much super twink it if I were toll it up on Blue99. Well not SUPER TWINK it, but meaning Fungi, and Epic with good solid 45+ gear for it.

Will I be able to solo a Rogue at high levels or is this a group class at high level 100%?
Like I said, I don't think if I roll a Shaman in my new untwinked group to play with friends that I will want to be playing a second Shaman solo 100% and the only other 2 classes I havent really played alot of are Rogue and SK and on Blue I "want" to solo just to relax and not be stressed out by pvp or keeping up with groups and such, just wanna solo for fun and enjoy the game on something that isnt super easymode soloing.