Lots of people will tell you lots of different things, but as always take it w/ a grain of salt.
The thing about dropping out is that you have to be willing to figure out everything on your own (which is sounds like you are). However, you'll find that you'll end up learning alot, but there will be holes in your basic knowledges and skill set. Unless you really dig deep into things you don't understand, you'll end up with just a shallow broad knowledge of what you need to know. And that at times can make or break your project.
I'd say, wait until you can make stuff to drop out.
The thing about dropping out is that you have to be willing to figure out everything on your own (which is sounds like you are). However, you'll find that you'll end up learning alot, but there will be holes in your basic knowledges and skill set. Unless you really dig deep into things you don't understand, you'll end up with just a shallow broad knowledge of what you need to know. And that at times can make or break your project.
I'd say, wait until you can make stuff to drop out.