You being in Prague is no problem little brother, but if the Kaiser request your presence it's important and you should obey to his order, it will be good for you.
Peter could take your place, but Duke Gunther, father, is getting old, and when I'm gone we need a strong man to defend the Household Army.
Herr von Mahren too isn't the youngest anymore, so we can't rely on him to take full control of our Household army.

So I think I will go on my own, if I ever get the change to go.
If the army building hasn't started in a month (OOC: 24 more hours of no chancellor report and Ansehelm will be pissed off) I will return to Rome to demand it.

(OOC: you will still have to fight some battles for the crusade m8, I'm gone entire July, I'll have no MTW2 for a month, I will have internet tho).