I have industry experience and I'm rooting for ktharavaad. An existing site in an exact spec, and when you have an exact spec, it makes everything much easier. Next, there's Pareto's Law which means that, yes, if ktharavaad is a rock star, he can do 80% in a full weekend. And then 10% more the following week. Then 5% more the following two weeks.

The code is trivial. It's really understanding what you're up against and the architecture that will get you there that's hard.