It all comes down to a personal preference. If you don't want to QT, that's entirely up to you. If you feel comfortable with where you purchase your fish from, and are sure they are coming in healthy, then you are right. Putting them through QT would be extra stress. However, from a unsure vendor, I'd still recommend it.
For example: Anytime I've ordered from Diver's Den, I've never QT'd. I was comfortable with the fish that came in and felt it wasn't needed to bother.
Another example: I got some Purple Firefish in from a transshipper. They looked great in the bag. Very active and no visible deformities. I did do a freshwater dip, and after seeing nothing come off of them, I felt comfortable enough to add them to my DT. I've had no problems with them since (I don't see em very often though :p)
Qt is just a preventative measure against problems. If you feel comfortable without using it, then don't.
Best part about this hobby is that just cause something works for one person, doesn't mean it will work for someone else. That's why we all belong to these forums. To pool our accumulated knowledge and share it with other people. But we also have to remember that no two tanks are ever the same. So, in the end, it comes down to what you feel comfortable with, and what works for you.
So, keep up the good work, and I'm looking forward to some updated pics of this tank! Especially stocked pictures :D