I don’t think Republicans would vote for Hakeem. Not going to happen.
First of all, imagine the media environment when the House fails to elect a Speaker. "Constitutional crisis", "National emergency", "The People's business neglected", "Racist Republicans won't vote for the man with the most votes".
Ballot after ballot, Jeffries 214, McCarthy 188, MAGA 33. What is more likely, that 4 liberal Republicans will wilt under pressure and elect Jeffries, or that McCarthy's 188 voters will a) give up, and b) switch to an actual conservative?
There are probably at least ten, maybe more, Republicans more aligned with Jeffries than McCarthy to start with. There are at least 100, maybe more, McCarthy Republicans who will never vote for a conservative.
A man's got to know his limitations. It's McCarthy, or Jeffries.