I'm not a fan of visible lasers on rifles but that is a personal thing. I keep lights simple with only on and off settings along with ability to get a momentary on. Other than those minor opinion nits. It seems like a good utility piece.
You could have trouble with the stock saddle and your charging handle, and I try to keep optics on the receiver. I like to just keep the nice solid mounted standard front sight, but if you go with a gas block mounted sight, remember that Magpul does not recommend them for gas block mounting because heat will melt them, and they are the wrong height. I like the YHM gas lock with folding front sight if you are going to stay with carbine length rails. If you go with a lo-pro gas block you could put a longer free float railed handguard on there and gain more real estate and get your support had out a bit further to drive the gun. Just food for thought.