Just do it!
I think a better way would be to start your business without aviation and then when you make enough money buy a plane to have fun in.
If you think you will make enough money tinkering with peoples old Pentium 3 computers you are sadly mistaken. The real money is IT for big business and if you do manage to bag one of those clients most of the stuff can be done remotely or depending on the scale, they will want you there all the time. If a big company is paying you lots of money to deal with their computer system and it crashes they aren't gonna want to wait for you to drive to the airport, fly over, drive to their offices, then fix the machines. Also if someone wants a new hard drive installed on their laptop they aren't gonna want to pay you 600 bucks to fly to them when they can goto Circuit City and have it done for 20 bucks.
Just my two cents and Im by no means a savvy business guy. I am in aviation
