Anything else I should be aware of? Is it just a matter of contacting EJ advisor; requesting the sales; then opening two Vanguard accounts and starting the in-kind transfer of both accounts online through Vanguard?
I am struggling a bit with AA. Currently I am about 58% US equity, 34% International equity, and 7% US Bond. Does that make sense long term to continue that ratio?
Personally I would start with Vanguard and have them initiate the transfer. For larger accounts (I think it is >$20k) you will need to get a medalian signature. You shouldn't need to deal with EJ at all if you go through Vanguard - they will open a brokerage account for you and transfer everything with a few signatures. Just be aware that for whatever reason it can take Vanguard several weeks to complete everything.
IME EJ will fight to keep you as a client, and they are also a horrible firm to do business with.
AA is a very personal thing. Given teh overlap that large US corps have internationally (the top US firms already do >50% of their business abroad) you may have a lot more invested internationally than you think. Are your US holdings SP500? Total market?
For long-term investors with higher risk tolerances the usual recommendation is to have 10-20% in bonds, though some do 100% equities. Your call.