The entire premise for the new party is dumb.
His gripe is basically both parties increase the debt, so both parties are the same, and we need a new political party because of this. He's focused on one issue. The smarter approach would be to find real fiscal conservatives to run for Congress and back them.
The only way a new party will work is if Trump messes things up so bad that his base starts to turn on him and that would mean things would have to be really terrible.