As to your other excellent points, it's actually a pretty simple battle plan: legal vs political.
Trump has the law - and the entire legal apparatus - on his side. The uniparty's play is to move the controversy into the political spectrum; obviously a much slower, more ambiguous approach.
Guess who is going to win? For one, the deep state must first win in 2018, then proceed to impeachment. Trump, on the other hand, has all the cards. He can collapse the entire facade at any point & time of his choosing.
Flynn, whether a purposeful sacrifice or not, set the standard so low - lying about what is in fact legally permissible - that every single swamp creature is guilty. I, for one, don't worry at all about what is coming down the pike. I think we're going to see the roll out pretty soon.
There's no way Congress would have passed Trump's tax bills - or helped him in any way, shape or form, if they thought the outcome would be in their favor. It was never going to be easy taking the country back - but it will and is going to occur simply because we finally elected someone in who was determined to win.
There isn't anything this so-called "deep state" could do after 2018 that they couldn't do today.