The IRS change is meaningless. They aren't building aircraft carriers, they're...modernizing and staffing an existing government agency. You can update your computers to Windows 10, hire call center staff, and pay tax accountants with a lot less than the 60B they'll have now.
This reminds me of the Boehner "deals" he'd strike with Obama, where the spending cuts are largely ceremonial and almost seem deliberately designed to piss off conservatives. Boehner had balls and managed to keep his people in line for a few years. I don't see how McCarthy can keep his Speakership or get this passed, given the reaction the deal is garnering on the right. We're prob a day or two away from Trump declaring it to be a terrible deal, too.