I'm sure you will get responses to refute what I'm about to say. I have a 12 x 12 x 10 foot room. I'm driving Aerius i's with a Cary 300 sei. 15 watt/channel 300b output tubes. In a small room like this, the amp does a supurb job of driving the Aerius i at what I consider loud levels in the 85 - 90 db range (I have no desire to listen above 100 db in a small room). I've read an earlier thread re: amp recommendation for Aerius, and post after post insisted a large solid state amp was necessary. I don't think any of these people had actually tried the tube combination, (they were purely giving responses based on experiences with solid state)Previously, I used a high quality s.s. Audio Research D-130 with the Aerius. The Cary actual sounds better with my speakers. The base is stronger and more refined than ever before. Mids are lifelike, highs are natural. The impedence curve of the Aerius is actually fairly easy, especially in the base region which requires the most current from the amp. The impedence drops very low (slightly under 2 ohm) in the high frequencies, but is still at 4 ohm at 7 khz.
I have not tried the Aerius with the CJ, but if your room is not too big, I'd go for it. BTW. The president of ML uses Aerius in his home, driven by a pair of VTL tiny triodes at 25 watt per channel. If you search for the review of the VTL 25 mono's, you can read about it.
Anyway, good luck and I hope you try it. I almost didn't try my combination after reading the experts, but I'm glad I did. I'm now a firm believer in quality of power over quantity.
As for clipping, many tube amps will clip more gracefully than solid state. I do not have personal experience with the CJ regarding clipping.