Online schools accepting Excelsior credits

I am looking around for a fast paced online RN to BSN program. I am interested in Chamberlain or WGU but am worried they don't accept A&P and Micro from Excelsior College. Anyone out there move from EC to Chamberlain, WGU or elsewhere for their BSN?
I guess I am also wondering how long it takes most people to go from RN to BSN through EC. I would like to be done in 18 months but I have heard that EC requires a few more credits than other schools and thus takes longer. Thank you for any help!

WGU does not acccept micro or A/P from Excelsior. However, it is competency based, meaning as long as you show competency you can get through it quickly. It took me about one week to do micro and about the same for the anatomy lab and physiology. Don't skip WGU on that basis.