You can always use the pseudo-cart (looks like a cart, but no filler, should have a hole in it though) that comes on the 306 for a short term solution until you get a drip tip. The drip tip is more comfortable, and looks better, but the pseudo-cart will work just fine. So don't wait to try out those 306s! I'm a big fan.
Everybody's already said it, but, in regards to the dry hits, you'll learn to feel for it. It took me a while after I switched to the REO to get it too, but you'll develop the sense of when to do it before the dreaded dratty taste. I don't even notice when I squonk now, it's just natural. And I came from an eGo-t setup where dripping wasn't necessary so it prolly took me longer to get used to than someone who dripped before finding the promised land that is REO.
I REFUSE to put up with the hassle, extra equipment, and mess that comes from dripping, though I must admit there isn't much that tastes better!