I have a large (10 G) feature class of 1 ft. contours derived from LiDAR that I need to identify, select, query depending on what I'm mapping. How do I manage such a large file within ArcMap? I would like to keep it as one file, as opposed to several chopped up bits. However, even when the settings for drawing (e.g. do not draw unless zoomed in to 1:2,000), it takes too long to render when moving around the map. Any ideas on how to best manage this?