I did the same thing but I was not as ambicious and just got them stuck at Mun. One funny event was I launched off of MUN and didn't have enough fuel for orbit. At PE, Jeb jumped ship and used his retro rocket pack to obtain orbit. He floated like in the movie gravity, until I got enough science for the crew container. took a unmanned probe ship with the crew container and collected Jeb, then intercepted Bob and Bill in their stuck ships. I really like the new challenges with the science... making me relearn and enjoy flying again. I went way too deep with mech jeb and got bored...