I tow with a Tundra but my 25' trailer goes down the road at about 6500 pounds. You are going to be pushing the numbers a bit. The issue with the Tundra, and most other half tons, is the payload. Your truck will have no problems pulling or stopping with correctly adjusted trailer brakes.
Once you set the trailer on the tongue, get your wife and kids in the seats you might not be able to carry much of anything else by the numbers. The numbers are guidelines and you certainly don't want to ignore them completely but when you go over by a couple hundred pounds I doubt it will cause you to end up in the ditch.
Get a GOOD WD hitch with built in sway control. Keep your speed down and load things into the trailer instead of into the bed when possible.
