Nice choice. Two things you may not know:
1) Your Blackhawk is hella-strong - you can safely use .45 ammo like the Buffalo Bore stuff, which meets or even exceeds .44mag power levels.
2) If you take the grips off, you'll see the two legs of the hammer spring resting on a little pin. If you want, you can lift one of the legs off and just let it hang there. On many Blackhawks, this improves the trigger pull without any unpleasant side effects, and it's easy to put it back if if you decide you liked it better that way.
I have one of the five-inch guns, and I've removed the adjustable rear sight. I use the 'wings' on either side as a fixed site now, and believe it or not it works perfectly! It did require that I file the front sight down a bit, but I am very pleased with the result. The end result is a very big, solid sight picture that is not going to shift around.