i have to agree.. get a good lawyer on retainer so he is held under confidentiality. then be kinda up front-ish. dont say what u do but he/she SHOULD be smart enough to figure if you pay cash and dont want to talk about some things he will draw his own conclusions.
my lawyer is my cousin so he is kinda in the loop about what i do but he also knows more about MJ laws than anyone i know.
mouth shut to everyone (but make ur silence counts with the lawyer he/she=$$)
-J