It'll depend on how high and wet and how warm you've been...it's probably a little early.
But, if you've had Bermuda, you're doing the proverbial relief action up a rope unless you also have sterilized soil and don't have any neighbors, etc., etc., ...
Even if you did kill all the growing rhizomes (almost certainly not done), there's seed from previous years that will germinate over a period of years and in a few years you'll have Bermuda again, anyway.
Plant and spot treat is probably only practical solution. I tried to get rid of Bermuda while we were in E TN and it was a miserable failure.
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