Currently I have been doing this myself on a smaller scale at 10-15 accounts max. however I have picked up a lot of information and methods through trial and error and surfing the forums. So far at the best i was clearing 20-30 M per day before i farmed off all my gold prematurely instead of keeping it for scripts i actually purchased which require some gold input initially. However, i've learned efficient ways to mule, create & set up accounts, what methods work and the sensible way to bot more safely and stay under the radar and which scripts on the bot store have given me the best results and which methods I used. I've also learned the best times to dump the spoils/returns on the GE and maximising profit for each method I use. and last but not least, i've read enough guides and methods of how people go about their VPS set ups, and there is actually a free & viable method on these forums in the guides section regarding Google developer which i'm going to explore this week! And on top of that, i've shopped around proxy services too and found ones that meet my needs accordingly and for a good price. And most importantly, how to set up my clients per device/VPS accordingly and link them with dedicated proxies using proxifier (also how to acquire it for free including license).
You're more than welcome to PM me or add my discord from my signature below and I can share some of the things i've learned which may help you head in the right direction towards making IRL cash from it.
Now I may not have as much experience as some of the other people on the forums but it's always good to share knowledge and learn from others!