how to choose atterney for eb ( 1 a), ask Xiao Bai Tu and other

I am going to apply for eb-1 ( a), wondering which lawyer is better: laywer A , Chinese lawyer, very famous, have a strong team support including native american lawyers, but pretty far, can only communicate through phone or email, have probably more than 1000 successful case ; Lawyer B, next block, native american, looks not very familiar with EB 1 ( a), her expertise is eb 3 . she said she does not know 245 ( i) and ( k) very well, need to do some research..., but looks very responsible, she said if she take care my case, she will draft by herself all of recommedation letters for me , not 5 lettres but 10 letters... I ahve pretty tight timing, need to finish application and submit very very soon, Ask Da shi, especially Xiao Bai Tu , which lawyer is a good solution, and higher possibility to win the case???? Many many thanks..