How doable is a double major in elementary education and english education?
Chances are your school wouldn’t do both. In my state NY, if you are majoring in childhood or early childhood education you need to declare a concentration area (history, English, science, math etc.) If you are doing secondary ed typically you’ll do a double major in Adolescent Education and your subject area.
English education is more of an adolescent field and is doable
Some people also do a middle school extension which for me in 7-9
You could do an extension to your initial certification but that typically comes after you graduate.
I think it would probably be tough.
And, in NY, both would place you into an incredibly tough job market.
Why not consider a minor in something like literacy or reading?