Upload & Sell: On
I'm not certain how the D70s handles non-CPU lenses or for that matter how good the viewfinder is for shooting manual focus. Quite a few folks hanging out on the Manual Focus Nikon Glass thread are shooting MF with the D7000 with excellent results. It may be that this decision has as much to do with the camera you will be using than with the lens.
I've certainly heard excellent things about the Rokinon 85 f/1.4 and it surely represents a great value for money. The recently released 85 f/1.8G is a bit more expensive but will likely be a fine lens at a reasonable price. Yes, you can buy an older AF lens in that range which would still be very useable.
I agree with Galen that Bjorn Rorslett's site is an excellent resource for assessing lenses, especially some of the older AI and AI-s lenses. I've had outstanding experience with the modestly priced 85 f/2 AI-s that, like its brethren, is a stunning piece of craftsmanship. These older MF lenses put new lenses to shame in terms of construction and feel while being used. But that may beg the question of whether it makes any sense for you to be going MF when you're shooting with a camera, the D70s that doesn't handle the lens as easily as later cameras.
Of course, buying the Rokinon, especially at a good price, is one way to find out both how well the camera can handle an MF lens and how you enjoy using it. Personally, I love MF shooting. However, if that is not your experience, and you buy the lens right, you should be able to turn it over for little or no loss. Whatever you do, enjoy yourself.