"formidable choice" is correct and usable in written English.
You can use it to describe a difficult or challenging decision. For example, "The CEO had a formidable choice to make between two risky business strategies."
Leaders of both parties considered Lodge a formidable choice.
To many on the left, Biden would be a formidable choice to face Donald Trump if the new president-elect runs for a second term.
The title role in Offenbach's "Contes d'Hoffmann" is a formidable choice of repertory for a young tenor making his Metropolitan Opera debut.
For the Reagan administration, it was Mr. Conable's legislative skill on the domestic front that made him a formidable choice for the job.
Longtime Burbank Water and Power board member Bob Olson said Davis is a "formidable choice" for city manager.
His replacement at Elm, Luke Venner, is a formidable choice, with his own style but one that has always characterized the restaurant's kitchen, sharply focused on the seasons and the provender available, particularly if it's from New England land and waters, with purveyors like Millstone Farms in Wilton and Smith's Acres in Niantic, CT, listed on the menu.
Vesper actually has a few formidable choices (including a take on the MPLS style Jucy Lucy) but you're going to want to stick with the cheeseburger, with the salt and fat cut perfectly by the homemade pickles.
The mantra is that United will be "difficult to beat" and they retain a formidable first-choice defence, not least in the centre, with Rio Ferdinand and Nemanja Vidic.
And the – look, just find a thesaurus and insert the formidable adjective of your choice here – astonishing Simone Biles continued to boing her way towards the gymnastics all-around gold with an awesome first performance.
More potent even than Tatar's annotations are her choices: a formidable scholar of the unschooled, she rummages through all possible tellings and retellings to finally choose the version of a familiar story that strikes her as in one way or another definitive.
As an astronomer, a biologist and a botanist, she had a formidable intellect, and the perfect choice for improving local schools.
