Well, I guess that depends on which way feels more mentally harmonious to you. I tend to complete one page/thing at a time (working offline in Notepad++) and then upload it when it feels "done". Although I often go back later and change the wording or part of the layout, or whatever, because I'm somewhat of a perfectionist and it's almost never 100% right the first time. Grrr!
Let the site grow organically, as if it were a living being, because, in a way, it really is. It's your self expression, and it will find its own order if you allow it to...without expectation.
my life is a real hot mess™
good luck, take your time!