trick question will be, if they have enough stock and still running the sale by the time you get your bars mounted and get a decent ride on them.
You can also mount them to the bike and ride a mile or so w/o bar tape to see how the width feels. I'd imagine it would be be unless its rudely wrong, you will need a long ride to figure out the brifter angles and such
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Rule #10 // It never gets easier, you just go faster.