I used to build CATV & fiber-optic systems way back when fiber was in its' infancy. I'd run the cable without fittings, leave a generous coil (20 feet or so) at either end, seal the ends o fthe cable well with shrink-wrap, and let the technician installing the later equipment do the end polishing and figure out what connection devices he wants to install. As for conduit size, always assume that what you have will be too small in five years, so while you have the ditch open, put in the biggest that you can. For a communications conduit I wouldn't put in smaller than 1-1/2" diameter unless I really had to. I'd also put a strong nylon or polypylene line through the conduit, tied off to something permanent at each end, to pull the next cable through with. Always leave a chase line in the conduit!
Hope for the best, but plan for the worst.