So what are the chances this passes the Senate and is signed by Trump?
Around 90%.
I'm very, very skeptical that it will pass the Senate even if McConnell nukes the filibuster, and even if he does, any possible reconciled version will have a hard time passing either house.
The filibuster doesn't apply here. It will be passed through reconciliation, which has never been subject to the filibuster.
See my second point, which is actually the more important one here. Getting the moderates on board (Murkowski & Collins) while keeping the hardliners (Cruz, Lee, Paul on this issue, etc.) will be the hard part.