[Gogar]

You need to ask for a copy of the alleged "lease agreement" before you send any alleged money.
Maybe it will help you see how sophisticated the person is.
It's also likely that if it's a scammer they can't help but put a tiny bit of 'real' info on a fake agreement that may help you.

I seriously doubt the actual lawyer Gregory Johnston is involved, it could be any person named Gregory Johnston.

Maybe tell him you want to do Paypal instead and you'll cover the fee, because your bank wanted to charge you way too much for the wire.

See if you get a different email address for the paypal.

Also, see if there is a paypal address associated with the email address you have already been given. If so, it will list a physical address and real name for the account holder.

Google the email address.
Google the phone number.
Type the email address and the email into Facebook.