Not sure Trump actually wants everything released
Trump is clearly terrified of it being released. That's why he's taken to insulting anyone who brings up Epstein, attacking the credibility of the file contents (just in case he is ultimately forced to release them) and engaging in delaying tactics like this grand jury testimony order.
Remember he said Bondi could release "all pertinent grand jury files" -- meaning (a) she gets to decide what's "pertinent", but (b) grand jury files only have a fraction of the information and (c) the judge probably won't release anything because Maxwell has a pending appeal on counts 1-5 and possible re-trial on count 6.
More than that, grand jury files are secret and can generally not be released to the public. The president can ask, the AG can ask, but only the court can approve the release, and the court can only do that only as defined in the Federal Rule of Criminal Procedure, Rule 6(e)(3)(E):
The court may authorize disclosure—at a time, in a manner, and subject to any other conditions that it directs—of a grand-jury matter” in a number of situations including:
(1) in connection with a judicial proceeding;
(2) to a defendant who has come forward with evidence that something improper occurred before the grand jury and he may be entitled to have the case dismissed; or
(3) at the request of the federal government, to another jurisdiction that needs it to prosecute a case.
Which of those apply in the current situation? Granted the language says "including", rather than "limited to", but the judge will take guidance from the specified situations and unless there's some similar reason to release the files, the judge will refuse.
But it *looks* like he's trying to be transparent while setting Bondi up to get thrown under the bus.
No, he's throwing it to a judge to decide, for three reasons (which he probably didn't come up with and probably doesn't understand).
The first is to delay and hope that people demanding the info calm down and forget about it in the meantime. The judge probably won't act quickly (they generally don't), and while the judge is thinking about it the administration can just point to the order and the judicial process and shrug, saying "Trump ordered the release, that's all we can do". That's bullshit of course, because Trump absolutely could just order the DoJ to release the files it has, but because it's mostly Trump's own people who are upset, and most of them know nothing about the Federal Rules of Criminal Procedure, they'll probably buy it. For a while.
The second is so that when the judge ultimately refuses, Trump can throw the court under the bus. "Hey, I tried, but those damned courts and their activist judges", again ignoring the fact that Trump doesn't need the courts to do anything. As you pointed out, Maxwell's pending appeal may help him get this outcome.
The third is that because the grand jury testimony was focused on what Epstein and Maxwell did, so in the unlikely event that the judge does order its release, it probably won't include a lot of damaging information about other people in their circle, like Trump or his associates, that might be in the full files the DoJ has. As you pointed out, Bondi also gets to decide what parts are pertinent, so there's that filter as well.
To be clear, I strongly doubt there's a "smoking gun" in the Epstein files that could convict Trump of sex crimes. If that were there, the DoJ would probably have acted on it after he left office. But there definitely is something in those files that Trump is afraid of. Maybe it's about him, maybe it's about someone near him. But there's something he doesn't want to come out and that's why he's refusing to release the files and trying to pre-emptively discredit them in case they leak or he is somehow forced to release them.