"I just dropped out of college to get into domaining. I had over a year left in my degree - could not see where it was leading - and so opted for domaining."
Ouch! I really wish you posted before dropping out. Domaining is just like any other entrepreneurial position: you have your good months, your bad months and something awful in between. While staying in college won't improve your cash flow, a good job rewarded from your college degree would.
You mentioned something about doing online college. I would encourage you to try. Although be warned, it's actually harder than it seems. I did almost a year of online college and you basically have to teach yourself, lots of reading, no immediate hand-raising answers to questions and less online free time.
HOWEVER, I can't promise that college is for everyone. Only, only, only if you believe college is a waste of time (for the field you want to pursue) I would encourage you to find some type of cash flow for the first couple years of domaining. Either way, you still need some type of cash flow.