Unless you are doing one of the premier conferences (ACC, SEC, BIGXII, PAC10...) every day a game is available it would say extremely unlikely, even if you were able to work one of those every day available highly unlikely.
If you want to quit your day job and be an NCAA official basketball is the way to go. Cha-Ching.
Here is what I have found rummaging around on the net. Is it as perfectly accurate as T-Rav's buddy, if he can find out, and if his buddy will tell him? I would say no, but here it is.
D1 major "premier" conferences are paying 500-600 per "conference" game. Over and above the game fee are expenses for the plane flight (or car mileage) and lodging which are added into the check. For a "non-conference" game the fee is 400-500 and no expenses are paid. For most of the non-conference, I would imagine the umpire will be close enough that they can drive. I would also imagine the most someone should drive on game day is about 200 miles before a flight should be taken, although I have not seen what the cutoff mileage for driving and flying is. Too many hours in a car before a game to be worked would not be good IMHO.
There are 15 weeks of games with 3 being played on Fri, Sat, Sun, against Conference opponents and the ones midweek are usually non-conference.
So, if you were to do weekends and then Tuesday Wednesday with Monday and Thursday off, you could make about 3000 per week (5 games) for a grand total of 45,000 for the 15 weeks. If you are picked for the Regionals, you get an extra 1,800, Super Regionals, 1,100, and CWS 4,100. CWS guys work the Regionals first so you can make about 6,000 in playoff money, for a total of about 50k.
Remember, you have to have a totally flexible schedule and the time off from anything else to do this, which is what it sounds like you were asking.
Many umpires work several conferences. If all the conferences worked are not premier conferences, then the money will vary.
Some conferences now work a 4 man for Conference games. That means if an umpire becomes incapacitated during the game, there are still 3 left to work the game and provide better coverage on the field than a 3 man crew and someone is incapacitated and it becomes a 2 man with less coverage.
Now, for other game levels. There are several out there who work 200-300 games a year. Obviously if they work every game for at least $50, that is a total of an extra 10 to 15k. Obviously the number of games one can work and pay levels differ all over.
Just remember, if time off is no object, the better the umpire becomes, the better the opportunities available. If you become top notch, just like in the real world, the money will follow. Also, you cannot have an injury that would knock you out of umpiring. You never know.
Unfortunately, baseball is considered a "non-revenue" sport, and therefor does not command the same amount of $$ that UIC alludes to in D1 basketball.
Here is an article from last year about the top guys getting 3,000 per game (they must pay expenses out of this). One thing they don't tell you, is that you get flight pay from your home and back for every game. Many guys do not go home after the game just to turn around and fly for a game the very next night. They spend the night in a town and then just drive to their next assignment pocketing a substantial amount of flight money, both the guys making the top 3000 mentioned that have to pay their expenses, and the ones who get the flight pay as an extra to their lesser game fee. They work their game schedule to make this happen and work for several conferences. Nothing is illegal about this, it puts more in their pocket (and of course they have to pay more taxes) and can be very substantial for the guys who work 75-105 games per year. And most of these guys are making 75k plus from the regular jobs.
added 4/19--and here is a guy who admits to making several (2-3) million from NCAA hoops while working for a utility company. Obviously NCAA hoops is the only way to go when money is factored into the equation. Good as it gets for professional officiating of amateur players. No need to try for NBA or MLB with great full time job and officiating job that pays 200-300k