absolutly go with the 5d mark2, well, it'll last with you for a longer time, way better iso performance, crazy pro video cabablity, faster,for printing no comparision as the mark 2 could produce hugggggeeee posters with even cropping the image, but the 5d will be limited after cropping,also it will have a better resell value later (atleast 5 years from now !!) when you want to upgrade
as for the lens no doubt the 85L for me is the best canon lens, very very sharp, very good in low light, but why to risk the 5d mark 2 for getting an older 5 d with that lens? i would say get the 5 d mark 2, get the regualr 85 which is again veerrrrry sharp, and next year or something sell the 85 and get the 85L !
let's take it from another angle, the perfrmance ofthe 5d+85L in low light and high iso is worse than 5d mark 2 with 85 f1.8 and high iso !! yes way better since the 5dmark 2 handles iso up to 6400 with no problems and the 5d will show lots of noise at iso 3200
talking about relaibitly and more econ get the 5d mark 2,, because getting the old 5 d will not be sold for a good price after a year or so
i hope you consider these points and good luck in your buy 