Something I should point out here, which I initially failed to do in my first post.
The SIG P226, Walther P-22, Kel-Tec .380, and Benelli M1 are all currently in my arsenal, which is why I included them in this list. Also, I already own the Bushnell Holosight, and M6 Light/Laser combo.
Many of your suggestions are very valuable, but as you can see the main purchases I need to make are in the AR department, which I am sorely lacking in currently.
As far as shooting out to 800+ meters - you are right, I can't hit anything that far. However, I have a three day Scoped Rifle Operator's class coming up later this month, which will help my long range marksmanship skills a great deal. Also, there is a 600 yard range less than one hour from my home, which I intend to go to more often once I get a good long range weapon.