good choice but i would have gone with the .40
I personally like the .40 or .45 over the 9mm for home defense as well. Main reason is the speed and size of the 9mm has a greater likelyhood of penetrating through drywall and hitting an unintended target. Both are better than being unprepared however. I like the set up either way.
You would have gone with the .40 but the OP went with the 9. To each his/her own and his/her own preference and comfort level. A 9mm is a perfectly good choice.
Here is our new home defense handgun... Haven't shot it yet, but I've got 550 rounds on order to put through it. All 124gr, as that's what I've settled on. Just a plain old Glock 19. Just bought the Streamlight TLR-2 for it. Think I'll upgrade the sights on it as well, just has plain old sights on it.
Glock 19...an excellent choice...stable, accurate, well-functioning platform...you'll love it! I knew a guy who put over 10,000 rounds through his 17 without cleaning it...and without a single hiccup! Pretty impressive...that was in the late 90's!
Just a small note about using a laser...if you're counting on using that for accuracy, you'll be too slow! You'll be looking for that instead of AT your target while your target may be already looking directly at you! Also, a laser (as well as a light) works both ways...it lets someone know exactly where you are! If anyone's using a laser / light in my direction, guess where I'm going to fire? Yup, you guessed it, directly INTO the laser/light! Why? Take a guess as to who's standing behind it? I'd guess that might be a new definition for the term "User Error!"
Suggestion: Train with night sights...keep a separate flashlight around as a back up! You can always hold it up and away and still get the job done vs have the light shine from right about where your mouth should be! Fancy vs basics...I'll take basics.
Just a few thoughts... ...and best to you as you learn the 'ins-n-outs' of your new gun! Enjoy it!