i sold alot gold in diffrent mmo's, the problem is not makeing the gold, getting banned etc, the problem is you need to compet with people who do this for a living.
incase you wanna sacrifice your real job feature for botting, you have alot reading to do, cause lets face it, after 1 week you dont wanna sit infront 4 screens watching over 40 bots, you want them to handle themself, and req only 1-2 hours a day, selling the actual gold.
so figure out what kinda programs that are out there, if you did bot in d3, you will know they had the program that manage to send all gold items etc to your main account, and continue botting, so all you had to focus on was that 1 account.
my advice get a job, and use botting as and extra income, that is what i did, i ran 6 bots in d3 while i was at work, when i came home, i made around 100$ a day, untill the prices got unrealistisk nerfed, but it's good pocket money.
if you wanna live on botting, your biggest problem to start with aint how meny you should run, how good your pc is, it's makeing memberships on diffrent forums, who have a sell/buy/trade section.
get into the market see prices, monitor how it goes, if prices goes up or down, " useally down " but wow hit it's cap for now i think, i can tell you most forums, sell 1k for below 1$.
so i can allready tell you now the above setup wont be enough.
1: get a client base, and talk with people start slow, gain some rep and trust, and solidt buyers, and grow bigger, main problem with wow is they have so meny servers, so you really need to find reliable buyers on the server you wanna bot on.
2: dont waste your rl money on new games and bot licenses, incase u get banned it's pure loss, i know it sucks and takes time, but start out with 1 account, and use the cash you sell to buy new accounts and expand, slow progress, but incase you get caught you wont have to look back and say fml, at the end of the day it's more important you get some food, over 3 new characters.
so unless you have the start amount to go all big, this is your only option, and you wont regreat if you start something that is simple to hard to keep up with, cause honest, it's not easy to compet these days with a game so old.
3: another option you might find on these forums, is actual gold sites, " members who have there own site " witch useally accept alot of gold on a regular basis, " but be aware the price you hopeing for, will probally be much less then expectet"
i can tell you i startet botting 1 month ago on my main, i had to monitor the account just for extra safety, cause this was my only income, now i got 3 accounts total, and only money i used so far, from my own pocket was on my main, the gold i sold has gotten me the 2 other accounts + license.
that said i been lucky to find 4 buyers i can barely keep up with on orders, but it was all thanks to those forums, as they say, it is not big orders that makes you rich, it's all the small ones you know that will keep rolling forever.
not sure if this helpet you out, but that is my honest advice.