for what do you need the gold? private or selling? here my suggestion if you want to sell:
i personally never bot 1 wow account more than 8 hours per day, thats why i have 3 wow ccounts for 1 bot account. SoR accounts are really cheap, and you get instant lvl 80 chars.
bot 1: 3 wow accounts, high populated server
-char 1 skinning -2 hour heavy leather, 30 min break, 2 hours rugged leather, 30 min break, 2 hours heavy leather, 1 hour disenchanting
-char 2 mining -2 hours Adamantite, 30 min break, 2 hours fel iron, 30 min break, 2 hours thorium, 1 hour prospecting+ore buyout from AH
-char 3 herbalism 2 hours netherstorm, 30 min break, 2 hours shadowmoon valley, 30 min break, 2 hours nagrand, 1 hour milling, and AH things.
bot 2,3,and 4 do same on other servers. always high populated servers, check economy before set your chars there.
the mining char should run from 6am to 2pm (adamantite is often overfarmed), skinning char 2pm-10pm (mobs respawn much faster than herbs or ores, so you dont need to mind if many players are online), herbalism char 10pm-6am.
make a nice tasklist in HBRelog, configure your shuffle bot, and but the next 3 lcenses
