None of that calculation means anything because he needs Ryan and McConnell to bring any bills up for a vote. They aren't going to do that for anything that has next to no support in their caucus except for absolutely critical votes like the debt ceiling and avoiding a shutdown.
That said a reimplementation of DACA that doesn't include full amnesty would probably actually get a majority of Republicans to vote for it.
They might be able to use a discharge petition in the House. I'm not sure if there's a similar procedure in the Senate.