RN to BSN through Excelsior?

I am a newly licensed RN looking for any and all info, tips, suggestions, etc...from others who have experience with or knowledge of Excelsior's RN to BSN program. Before starting my 2-yr nursing school program I had gone to another school and did all my pre-reqs except for two classes required for that school's BSN program. I applied to that school and the one i just graduated from and got into the ADN program. How fast could I get my BSN through Excelsior, knowing I don't have but those two classes left (provided Excelsior takes all my pre-reqs and/or doesn't require others I may not have)? I've been to their website but am a little confused about the process. Any advice/knowledge is appreciated! TIA