I would add Wake Forest. Although not a huge city, Winston Salem is pretty cool (3 miles from campus) and Wake provides shuttles to it’s new downtown campus. 4800-5000 undergrads so it’s a good fit. Tons of outdoor activities and a vibrant D1 sports scene (unusual for a small school, but hey compete in the ACC and hold their own in Football and Basketball while excelling at other sports - soccer, baseball).
Similar academic feel as Richmond and William & Mary (small classes, intimate professor relationships, no TAs teaching classes, research ops, etc.). Overall probably closer feel to Richmond as it’s private in a beautiful suburban campus with a geographically dispersed student base. Pulls from a lot of the same states. About 50% larger student body than Richmond but at the lower end of your preferred range.