Building Things That Actually Ship
A site that demos well on a designer's laptop and a site that loads fast on someone's phone at 40% battery are not the same project, even when they're the same codebase. The gap between them is where most web dev actually happens: not in the framework choice, not in the animation polish, but in the unglamorous work of making sure the thing works for the person who didn't choose fiber internet.
Performance Is a Feature, Not a Chore
Nobody files a bug report that says "this feels slow." They just leave. Performance work doesn't show up on a feature list, which is exactly why it's the first thing cut under deadline pressure and the first thing users notice when it's missing. The budget above isn't a suggestion. It's a constraint. Treat it the same way you'd treat a hard deadline, because to your slowest visitor, it functionally is one.
The Stack Doesn't Matter as Much as You Think
Every stack argument online is really an argument about defaults, not capability. You can build something fast and something bloated in nearly any framework, and plenty of people have done both in the same one. Pick something you can actually maintain at 11pm during an incident, and spend your remaining energy on the parts users actually feel: load time, layout stability, and whether the buttons do what they say.
Ship the Ugly Version First
A working version with placeholder styling beats a beautifully designed version that's still three weeks from functioning. Get the real data flowing, the real interactions wired up, and the real edge cases surfacing, then make it pretty. Polishing something broken just produces an attractive way to discover you built the wrong thing.
What "Done" Actually Looks Like
Done means it works on a phone with a cracked screen protector and one bar of signal, not just on the monitor it was built on. Test on a throttled connection before you call anything finished. The budget above is the number to hold yourself to, and the fastest way to blow it is assuming your test environment resembles your users'.