I don't buy it that it is a thought out unified plan long in the making ? These are conflicting party messages right in your article:

 Rep. Mark Meadows (R-N.C.), the leader of the conservative House Freedom Caucus, said the bargain was unacceptable. “The swamp won,” he said. “And the American taxpayer lost.”

“This is Trump’s party right now,” Sen. Jeff Flake (R-Ariz.), a frequent critic of the president, said in a phone interview. 

To some degree, the president and his congressional allies are harking back to the policies of a free-spending, tax-cutting predecessor Trump has long maligned — George W. Bush.

There's these two pieces at Politico I read;

The only certainty in Trump's budget: Oceans of red ink

Even if the president were to get the spending cuts and economic growth he wants, deficits would explode to $7.1 trillion over the next decade.

By David Rogers, Feb. 12

[....] Trump is ordering Republicans back to the trenches to fight nondefense appropriations. But he himself shows little appetite still for taking the lead in a major way on more difficult entitlement issues.

The bottom line is that Congress and the president, like Wall Street already, will soon be keeping a closer eye on Treasury bond rates [....]

and

'Never been a more discouraging time' for Washington's deficit hawks

02/12/2018 07:36 PM EST

then there's this, also @ Politico

Lawmakers promise bipartisan ‘no’ to Trump plan for cutting diplomacy and aid money

By Nahal Toosi

at The Hill

His get tough with the drug companies blather has proved to be just blather

Trump fires first salvo on drug prices

By Peter Sullivan - 02/12/18 08:32 PM EST

and this utter nonsense that's not going to happen this way, factoring in Obamacare repeal:

Overnight Health Care: Trump budget seeks savings through ObamaCare repeal | Trump would cut health department funds by 21 percent | Proposed changes to anti-drug office spark pushback

BY RACHEL ROUBEIN AND JESSIE HELLMANN - 02/12/18 07:45 PM EST

Yes, Trump has presented a budget that is trying to slash all kinds of domestic social programs. But everyone in Congress knows that those are a drop in the bucket and it is just typical GOP modus operandi for propaganda effect, including sop things like stopping giving NPR any money because it aggravates conservative constituents.

Looks like chaos to me. They are split several ways and then there's Trump: what it looks like he is trying to do: BLAME THEM for the deficit by producing a phony budget that purports to have all the needed savings in it.