The rules changes still have to pass the full House ...
I don't think that will be an issue. The House needs rules to function, the FC won't vote for the Rules unless they contain all the bargained-for provisions, so it'll all be in there.
Other than the Holman rule, all those rule changes greatly benefit the party out of power, so the Dems won't put up much of a fight though they'll vote against them just on principle.
And to those who think they won't benefit the Democrats, here's what Matt Rosendale said on the House floor to Maxine Waters:
"Last summer we began to negotiate, a group of us in good faith, a list of changes, amendments, to the rules of this body. Not to empower ourselves, not to bring personal benefit to ourselves,
but to empower you and you and you, Maxine, and you, and you, and everyone sitting in this chamber equally," Rosendale said....
https://www.foxnews.com/politics/rep-elect-maxine-waters-appears-shouting-match-republicans-house-floorIf you're the party out of power, taking the Speaker's power and dispersing it to all members equally is a massive gift.