Trump would be better off having it in March, then using all the months before November to propagandize it like he did January 6.
If the trial ends up being in September that's not good for him at all. It's a criminal trial and he must be in the courtroom, off the campaign trail. If he tries to manage both, at his old age he's going to look and sound like shit, making even more mental and speech gaffes, looking demented. plus, his hair and makeup can't take that much each day. Don't even get me started on his girdle.
He's the most unmanly president we've ever had, and that includes James Buchanan.