PFLAG in D.C. is pretty lousy on trans* issues, IMO. I would approach their recommendations with much skepticism. I'm based in the D.C. suburbs and I do trans* activism and education throughout DC/MD/VA. I have had a pretty consistent stream of difficulties with PFLAG to the point where I generally don't even bother trying to work with them anymore.
Why not go to some of the local trans* groups and ask for their suggestions? I know this subject has come up at MAGIC so folks there are likely to have some suggestions. You could also try places like the D.C. Center or other places that are actually part of the trans* community or heavily engaged in it.