Congratulations! and awesome shots!
I just recently got one too.
For me, it seems so short compared to my telescope I've been using for birds.
but wow, I'm able to react to shot opportunities soooooo much faster than I'm used to. Between AF and the ability to get off my tripod, it sure is fun to use, compared to what I'm used to.
+1 on the vote to get that SDM TC available soon. I'm looking forward to it.
Don't over look it's close focus ability. It's nowhere near macro, but it's close enough for flowers and other equivalent sized close-ups.
Here's a shot I took the day after I brought home my DA*300. He's no bald eagle, but up to this point, I had found him too fast to catch with my telescope setup..
K20D, 300mm @ f/4, 1/250th, ISO560
Good luck, post some shots when you get it!
-Chris