There is no question that has been his plan all along. I'm sure he has been thrilled with the power of being pREDDITent, but it's the base he's attained throughout, whom he won't readily push away even in his role as pREDDITent, that will go with him in whatever he does.
He will find out that base won't be as big as those who voted or supported him politically, because there is also a good chunk of those who went for him due to his position.
Trump will be a factor through 2024 at least.
Where he will screw up is if he gets directly back into politics. The GOP will squeeze him. They learned they can win without him, at least within the ebb and flow of politics. If he goes independent, he will split the GOP vote. A vote from Trump or an independent candidate of his choosing will be a vote for the DNC.
If I were him, I would stick to the financial and media side of this only. His network can take over (even include) guys like Hannity and Rush.