The problem with a one-man operation is that there is only one man in charge. The benefits of a one-man operation include that there is only one man in charge.
When things go sideways, you know exactly who to blame. But he's really hard to fire.
Game design is an interesting beast. You should be commended for putting up with its travails. Personally, I'm looking forward to seeing the results.
Thank you, @lextenebris, and you are 100% right on all of that. lol.
I hope I do not disappoint.
I'm going to let you in a little secret.
Even if you do disappoint, it's not the end of the world. It's still a product you can sell. It's still a project you can show off. It's still an accomplishment.
Worst case, you go "well, that turned out poorly," and go on to do something else.
The creative side of the RPG industry, the artifact side – that part's not a problem. It's the business side that really kills a lot of people because most of the people who have gone into the RPG industry have no background in business, they have no association with business, they never watched anybody run a business, they have no idea what is involved in business, and really they're just not suited to business. That's the part that will get you. That's the bit that requires watching.
Just don't let it eat you. Everything else is easy.