So...............what did you decide, or did you? I'll cast another vote for the 3-inch, I think it's the best all-around length there is. Personally, I can't hit doodly from a 2-inch past halitosis range, but to me the three-inch is just as easy to shoot as a four-inch.
And Canon6, that is a SWEET piece of hardware! Nicely done!
Papajohn