Removed as a minor H&C cases are, generally, about as strong as H&C cases get (there are some particular circumstances otherwise, but generally) . . . except, they are not quite that strong, and thus more difficult to forecast, if the PR had minimal time and ties in Canada to begin with. Typically, well worth it for those with a strong desiring to move to Canada. And if granted the PR can usually proceed to apply for and obtain a PR card, which makes settling in Canada a whole lot easier than having to manage for two years without a PR card (if waived through at the border). It seems the risk of being denied a PR TD is greater than the risk of being issued a Removal Order upon arrival (such as by traveling via the U.S.), but this is not for sure and probably is only incrementally so.
Once the application is made, IRCC can proceed to adjudicate status. Whether IRCC will do that, despite a formal request to withdraw the application, is not at all clear (in contrast, once a PR card application is made, it appears that for a PR in breach of the RO, withdrawing that application generally will NOT avoid a RO assessment and being issued a 44(1) Report, unless there is a H&C decision to allow the PR to retain status despite the breach). But as
@armoured observed, this would not help much in your situation.