Yes correct. Better to run a Duronto exp on this TT. Yuva i think is not pleasant journey. I haven't seen the rake. What i heard is coaches have very less leg space also. Also i feel travelling 1 night journey sitting is very very difficult, and gets late additionally. Sleep is required for passengers at night. For comfort point of view better convert it to Duronto exp with Sleeper and AC coaches. Yes, 1 AC Chair car coach can be kept for any last minute travellers or Short distance travellers.
That much speed might not be possible for sleeper coaches