I would pay attention to the number/share of English majors at the school. Seems like you want a critical mass of peers who are similarly turned on by the topic. Also, a department with a relatively large number of majors will draw more resources than one with relatively few majors.
You can see this info here:
http://nces.ed.gov/collegenavigator/
Search for schools, then for each school, click on "programs and majors." Based on these numbers, I'd focus on the first three.
W&M--108 English majors out of 1500 bachelors' degrees awarded
UVA--148/3700
Mary Washington--111/1000
JMU--160/4000 (but 71 of these are in professional/technical writing)
GMU--389/4900 (but 244 of these are in "rhetoric and composition")
Christopher Newport--55/1060
VCU--141/4700