AMSO is fantastic, and with sound packs, it becomes epic. And it has a plethera of autopilots to boot, but I am not certain how the AMSO LM will play nice outside of a AMSO scenario, and it does not really fit your mold as a current or near tech lander.
I know the Orbiter Italia guys have made lunar mission packs before, but they are older, I think made for Orbiter 2006, and I was not able to get them to work last time I tried. Antares is a very nice capsule that could get you to Lunar Orbiter, but it has no lander with it, so the best bet would be to use the Francophone option. Or use a bit mother ship and have the DG act as your "lander" as it were.