1) Welcome to the forum
2) Wrong forum. This is for the bike of the month contest
3) If you lower 3" I sincerely hope you live in an area of the country like Florida where all the roads are flat and straight. VERY straight. Because you ain't turning that bike. Even long sweepers like freeway onramps, you'll be doing half the speed that you should be.
You're also upsetting the suspension geometry. Engineers who study for years designed your suspension for your bike to operate safely, at speed, during turns. You go as far as 3" lower and the entire configuration is out of whack for the bike and this can cause problems if you're really a rider. If you pose at Starbucks, trailer your bike to Bike Week, or only bar hop... you'll be ok, but if you actually ride, 3" is absurd.
It looks cool, but it isn't the best mod you can do in my humble opinion.
2012 HD Road Glide Custom - Black denim