Hi and welcome to VB.org
As the saying goes good things comes to those who wait and its true with starting your own forum, You will never be happy with just the default forum so you will need to take time to learn and customise the product to what you want.
You state that your too busy? Then you'll have to slow down a bit and plan what you really want from your forum, rather than simply rush into it and ending up with something you don't want.
Its really easy to set up the boards from your ACP, You'll need to have a play around and see what works best for you, but normally you should be a least able to set up your boards and categories without much hassle.
Once you have a basic setup you can then think about adding skins and changing layouts, again read up on this, cos if you rush you'll make mistakes.
We're all here to help, just ask, You can't say your dissapointed in VB just yet, you havn't started
Take care