That's a very healthy qwerty pace. It would many months, perhaps years, of daily practice before you exceed that. I've been lurking in that community and unless you have A LOT of prose to produce which can justify the up-front learning investment, steno is IMHO best approached as neat hobby/game that also happens to get you fast text input ... eventually. Else you are in for a frustrating wait.

Oh, and to your question, very good stenographers head off into the stratosphere at 200wpm+ (elite in 300wpm+) for extended periods, rates not really doable on qwerty except for short burst of predictable prose IMO.