if youre looking to make lots of money by multiboxing, youre probably looking at this incorrectly.

making money multiboxing just amplifies whatever skills you have currently in your money making endeavor. if you make crap for money right now, youre going to make crap for money when you multibox. if youre good at making money now, youll make a crap more money when you multibox.

so your question for how to make money comes down to, how do you make money now and if you add 1x or 5x characters, will that multiply your income by 5x or will it simply be a money sink?

note that playing multicharacters increases your logistics costs. playing 1 toon, having 1 carrier will be more than enough to suticase your stuff all over null. having 5 toons... 1 carrier isnot enough. at that point youll want jumpfreighters and multiple carriers to shlep your stuff across the stars. does your wallet reflect the ability to be able to shoulder those costs? y/n

if no, youre going to look into WHY you want to multibox. is it just to plex them? set up a set of accounts to do incursions i guess.
want to just pirate and kill stuff? if answer was no to the wallet question, go buy plex.

questions of these nature are super generic and answering them is difficult. also answering them cuts into the markets that the players here own. whether its market, wh, incursion, etc. the more people that come into the market, the smaller of a cut we multiboxers get, so we tend to not share such information freely.