You're absolutely fine doing everything but probably Veteran trials.

Vet 4 man Dungeons will be fine, so I'd say, have a blast!

23k is more than enough for vet Dungeons

The problem with ice warden is not really dps. The primary problem was that at the same time ZOS seemed to be trying to make ice warden DPS a thing with ice damage passives and ice abilities it was also making full heavy attacks the basis of combat and trying to make ice staff tanking a thing by making it's heavy apply a taunt. The result of all of this is that you have to full heavy with your ice staff and that full heavy pulls taunt from the tank.

It is all a good illustration of the complete lack of basic understanding of combat the Wrobel has and why he should be fired. Who would be stupid enough to do all of these contradictory things at the same time especially when it would likely lead to less experienced players trying the whole ice staff warden thing and blowing up some of the few dungeon runs that their long broken group finder manages to put together.

Petition to:
1) Fire Wrobel
2) Make heavy / light attacks scale in a sensical way so that full heavies are not required and heavy animations align with actual cast times.
3) Remove the taunt from ice staff heavy. Just lower the cost of the undaunted taunt to something rational and you can use that on your ice bar. Nobody can really use the ice taunt as tank anyway because 2.2 seconds with no block to apply a taunt is crazy talk.
4) Make me a dps test dummy with Wrobels head on it. You could do it so he spouts some memorable ESO live idiocies when you hit him.