I've just driven a 2500km return trip to pick up my new (2nd hand/ebay) LPL C7700 MX enlarger. It came with an EL Nikor 5.6 80mm lens. Will this be OK for enlarging 35mm negs to maximum size on 8X10 paper? I've had a quick play (darkroom still under construction) and with the head about 70mm up the column the lamp illuminates a neg over the full area of a piece of 8X10. So will there be any problems? I'm a bit concerned that exposure times will be a bit long because of the lens to paper distance and the max aperture of only 5.6.