I only have the back lowered by about 1'5" to 2". According to the dealership, it will actually make the bike easier to handle at slow speeds. The only issue that I was able to get from my co-worker who owns a Tour Deluxe is if the tank is full of gas...it can be top heavy. But as soon as you take off, it is smooth as silk on the highway.
I've checked the specs on the Venture and Tour Deluxe as far as seat height is concerned. The Venture has a seat height of 29.5" while the Tour Deluxe has a seat height of 29.1". Not much difference. I sat on his bike this morning and I can almost flat foot the bike standing straight....not on its side stand. With another inch lowered, I am confident that I can flat foot the bike with no problems.
Thanks for all your inputs and as soon as I can get some pics of my new ride, I will post it here.