I'd use 3DOT2.
Personally, I have plans for my 85D but not going to post them since you have to get a permanent plate here before you can apply and I don't want someone else to take my idea.
Breser - you can order the custom plate now for your current car and just transfer it to the new car later.
As long as both are registered in your name, it's as simple as mailing in a letter:
WA State Licensing (DOL) Official Site: Transfer license plates to another vehicle