I have an ich outbreak right now, and all my fish are acting normal, just with little white spots. Some of these fish are more sensitive, such as Blue Rams and Clown Loaches. I don't see any sign of ill side effects.
I too have the question about plants... I've heard stories both ways.. but I think in general, you're more likely to lose more delicate plants... but in the short term, they should be OK... as long as you get the salt out through frequent water changes. That's just a guess, I know nothing.. this is my first ICH outbreak.
I don't think you have ICH..