should I consider laser sights, use a flashlight, practice night shooting w/o using the sights at all?
Yes, you should consider all three of those things. Don't just choose one. Learn to shoot with a flashlight, with a laser, and without any artificial aids. Learning to shoot in low light without the artificial aids will help you be even faster and more accurate
with the aids - call that the best of both worlds.
My own home defense set up is a laser-equipped handgun stored in a fanny pack along with my cell phone, a spare magazine, and a small but bright tac light. There's also a key to the front door tucked into one of the pockets, attached to an unbroken lumastick.
With this fanny pack set up, I can instantly have everything I need attached to my body, regardless of what I wore (or didn't wear) to bed that night. If I need to move through the house to get one of the children, I won't be juggling these essentials. If I need to stay put, one of the essentials won't end up on the other side of the room from me, leaving me the unsavory choice of doing without or making noise to retrieve it.
The front door key and the lumastick are so that if we decide to hole up and wait for cops, I can throw the key out the window to them when they arrive, and they'll easily spot it.
I've deliberately chosen a handgun rather than a long gun, based mostly on my personal circumstances. The presence of children in the home means I'm more likely to need to
move through the home (although I'd much much much rather hole up -- we have to all get together first!). It also means I am more likely to need one hand to hold onto a child or shove the child behind me to safety, leaving only one hand for running the firearm. And my personal tastes are such that I'm much more comfortable with and confident in my handgun use than I am with any long gun, and that's a factor too. Others have different circumstances and different preferences, and that's okay too.
pax