The Last DJ.
I'm a big fan of sleep, much to my girlfriend's chagrin.Good to know, thanks. This tempts me to research further into this.
It all comes down to available time. Work like this generally comes with a deadline. One has to ask oneself, "Can I budget the time to learn the rules and create the scenario(s)?" and "Will this make it harder for me to complete my other projects in a reasonable time-frame?"
It would be wonderful if this body didn't need maintenance care, like sleep. Some of my best work comes out when I should be sleeping.
Being serious, I've found that for roleplaying games, a lot of times the client or clients don't require you to know the rules; their looking for someone to fill in the background lore or smooth out the prose. The roleplaying game jobs also frequently run into delays, so you'll probably be done with you requisite work long before the client is ready for it.