That's pretty much identical to the most successful writing process I've ever had too (though I tend more towards typing everything up in bulk at the end of the week than doing it as I go along). Ghost Stories got written like that, and the sudden major jump in productivity that hit me back in '06 (as in, from maybe 10-20 thousand words in a good year to something decently close to 100 thousand) was largely thanks to picking up the habit of writing that way. The typing-everything-up stage of the process gets a bit annoying sometimes, but whatever the reason, drafting everything on paper first works so much better for me.

*rejoices with you*