I like unclesurf's sage words of advice - very practical - the kind of advice I'd give my kid, but it also sounds as if the kid is really pumped on his new job and you are young enough to give it a good go to see if it's gonna work...
If we were all about harsh reality on this board, trip planning threads would go a bit more like this:
"you know, catalina really isn't producing, probably shouldn't go, the weather's gonna suck, the lings are all short, yellowtail tastes gamey, might have boat problems...."
I had a college roommate who dropped his studies two years into it and got a job selling Xerox machines. no base, only the golden handshake and wink.
Two years later, he bought the oceanfront condo we were renting in Ocean Beach, kicked us out and remodelled it into a lady slaying bachelor pad - he now rents that out and upgraded to a "cottage" at WindanSea beach.....
I also have a friend who dragged themselve out of the gutter, got on methadone, quit the ICE and special K and is now getting her PhD at MIT - (she's hot too

)
go for it kid!