Persecuting your political opponent is banana republic tier behavior.
Your political opponent broke the law.
The only case that appears to have merit is regarding the withholding of classified documents. Other cases seem weak. Trump will argue that “well Hillary Clinton did it why can’t I?” and to be fair he would have a point there. It comes across as political persecution and it wouldn’t surprise me if jury nullification was the outcome. Either way it won’t stop him from running for president.