I like raid gearing mine, as i like to play them sometimes. I dont really farm much gold anymore. But when i did - i usually geared them out anyways. Having a lvl 85 dk with cata starter gear and still some gear from the DK starting zone just screams out bot to me.
I start with questing to 85, 80-85 I run mixed a few hours aswell (when I go to sleep, if he gets stuck he still go BG).
At 85 I do the same, Gb2 and Mixed Mode. Full PvP gear in a day or two,
Use gear from questing to 85 until i hit 85.
Then honor gear and once geared change honor points into justice points and buy the justice gear you can if you want to raid/instance. Then buy Heirlooms with converted points if your leveling more than 1 char on that realm.
The gear might change from quest rewards to Dungeon gear if Dungeonbuddy ever gets running right though.