Now if I crank the T-bars in the future up to 3 inches, I'll just need to pull a couple of shims to get the camber back in..easy.

No, it is not that easy. Ride height affects toe too. As the wheel drops, (or is lifted, same relative thing) the tie rod pulls the front of the tire to the inside. If you cycle the suspension, you will see the tires toe in and toe out as wheel position changes. These things are not things you can eyeball if you want it done correctly. You can get close, but for $40 it is well worth the cost of an alignment.

Michael