I finally decided to give interplanetary travel a shot. I slapped together a craft with two unmanned landers to send to Duna with the hope of putting them at the poles.
Orbital insertion burn around Duna (landers are on the right, top and bottom):
Something went wacky around this burn, or I lost track of something. The burn was supposed to take a smidgen over 1000 m/s delta V and according to MechJeb I had 1600 m/s in my craft before the maneuver. After a nearly perfect burn, it reported a total of 44 m/s delta V. Thankfully I had brought along a ton of RCS, so I was able to use that to get the cruise stage + landers into a decent, albeit highly elliptical, polar orbit. I didn't quite know what I was doing while attempting to bring down the landers though, so the first came down near the equator.
First lander coming in:
Chutes deployed!
Due to Duna's wisp of an atmosphere, even 4 heavy duty parachutes were barely enough to slow the craft down. I had some RCS on the landers for a semi-powered descent though.
Success!
I did a much better job aiming for the north pole with the second lander. Here it is beginning the descent.
Chutes deployed over the north pole!
And a successful landing at the pole!
I attempted to use aerobraking to bring the cruise stage down into a closer orbit, but due to the thin atmosphere it took a long time. But it is now drifting comfortably at a 80 km x 75 km orbit, "communicating" with the landers below.
I just used MechJeb to lay out the maneuver nodes, then did the burns myself (with the exception of the fine tuning burn on the way to Duna).