Yep thanks guys for the ideas and offers, forgot I posted this thread, glad it has legs and might help someone else out.
My trailer guy was able to find a local shop to fab us up a 5x5 to a 5x150mm hub adapter.
I also found a shop in AZ that would be able to do it.
So, Nakman kindly broke up a set of 100 series wheels for me. Thank's Tim!
For future reference, the trailer guy I am using had several hub options and only one was toyota friendly at 6x5.5 but... no one will fab up a 6x5.5 to a 5x150mm. The dimensions just don't work out.
My thought was to get a hub that was the 6x5.5, so that if I ever went to another Toyota I could match the wheels... I can still do this, obviously by just swaping the axel hub for a 6x5.5
Anyway, great learning lesson on all this for me and my trailer is in production.
Carry on with your wheel swap!