Yea Florida does allow for smokeless but I'm not a fan of them. Flintlocks are sexy enough to be worth all the extra work.
On the CO2 discussion, I was informed that oxygenating is best done before primary fermentation then later avoided.
I have been using this handy gadget for unloading my muzzleloaders to shoot carboys and kegs full of CO2 and hopefully pushing out the oxygen. Is this a waste of time, or a habit worth keeping?
Here's the sweet gadget
http://www.eders.com/product.php?productid=166941