Hi Mike, it's not easy to advise someone which eyepiece they'll like best when choosing between type 4 Naglers and Ethos. The Ethos has better optical performance but the type 4's have longer eye relief - you won't know what you like best until you try them.
The 41 Pan and 31 Nagler are pretty safe bets - most observers would be satisfied with these two - wide, sharp views with good eye relief.
I'd suggest Pan 41mm, Nagler 31mm, 21mm Ethos, 13mm Ethos.(assuming you don't need to eat for a while
). Type 4 Naglers would be fine instead of the Ethos if you want to spend a bit less.
You may find that you'll only be able to use the 13mm occasionally due to turbulence in the air above your observing location.
Also note that the real magnifications will be around 10% higher than calculated when using a 2" diagonal on the C11.